****************************************************
MAP Alert #323, August 29, 2009 see attachment page for file
Greetings MAP Observers!
Our
second weekend MAP Alert with current news and observations.
Gerard Faure's trip to China and his asteroid
success are highlighted in his message below. His "AUGUST 26,2009-MAP MEASURES SINCE THE LAST UPDATE OF MAY 31,2009"
file is attached.
Tomorrow's alert with be a round up of remaining items and comments.
Gerard
writes 8-26-2009
Hello All:
As said yesterday in my previous email, I was silent since the middle of July,
due mainly to my travel in China for the Solar total eclipse of July 22. My wife and myself saw and imaged many amazing landscapes
and interesting Chinese particularities during our trip. I worked on more than thousand
pictures or movies since our
return at the beginning of August.
Since this time, I am also under the sky four times, but only three times for the
asteroids :
August 14,2009
--------------
7305 Ossakajusto v14.7 F/0.5 Old MAP Object
5026 Martes
v14.9 F/0.5 " " "
1199 Geldonia v15.1-15.2 B/0.1-0.0 " " "
6003 1988 VO1 v15.7-15.7
F/0.4-F/0.4 " " "
On August 14, I missed 6560 Pravdo already missed in the past by Richard Bookamer. This
object was low in the sky, but also surely fainter than v15.5 the probable limit of magnitude in the area of the southern
sky. Pravdo is at least 0.4 mag more fainter than predicted.
<Call for CCD observations>
August 19,2009
--------------
1994 Shane v14.8-14.7 F/0.6-F/0.5 Old MAP Object
5026 Martes v15.0-15.1 F/0.7-F/0.8 " "
"
3306 Byron v15.5-15.4 F/0.7-F/0.6 " " "
12867 Joeloic v16.2 F/0.3 +/-0.1 New MAP Object
<Call for CCD observations>
I measured Joeloic just after the control of the C8 magnitudes on the photometric
chart SA68 where one of the stars of V16.1 was a few easier to see than Joeloic
August 24,2009
--------------
88 Thisbe v 9.8 near the area of 7305
7305 Ossakajusto v14.9-14.8 F/0.8-F/0.7 Old MAP Object
<4080 Galinskij
v15.0-14.9 F/0.6-F/0.5 New MAP object by Andrew>
Gerard adds measurements to Andrew Salthouse estimates
2949
Kaverznez v15.2-15.1 F/0.7-F/0.6 New MAP object
<Call for observations> 2051 Chang v15.4-15.4
1891 Gondola
v15.7 4073 Ruianzhongxue v15.8 B/0.5 New MAP object
<Call for observations> 2856 Roser v16.0 12867
Joeloic v16.1-16.2 F/0.3-F/0.4 Recent MAP Object
I observed Galinskij just a few hours before Roger Dymock for
his first series of measures. All the measures or averaged measures of the three observers are in the same difference of magnitudes,
about 0.4 to 0.6 magnitude fainter than predicted. Normally, with an averaged discrepancy of magnitude under the half-amplitude
of light variability, I "close" the MAP
Object, but as Roger Dymock wrote (another message not covered here
yet), this object seems - thanks to his three sets
of lightcurves - to have a discrepancy of magnitude independently
of the great amplitude of light variability, about 1.01 magnitude during a previous lightcurve by the Ondrejov program.
<Roger wrote me of his "perhaps not out of the MAP" yet as well, LG>
I observed Kaverznez to compare
Galinskij, but finally this object was also fainter than predicted, between the brightness of Galinskij and Chang.
4073 Ruianzhongxue was in the same chart than Joeloic and I was surprised
by its brightness. It was predicted 0.4 mag
fainter than 12867 Joeloic, but finally it was brighter, while 12867 again was fainter than predicted.
In the past,
I imaged 12867 in 2005, but I measured again recently the image with the CMC14 on Astrometrica and found also 0.4 mag fainter
than predicted.
In June 2009, the MPC moved H from 14.0 to 13.5; Maybe it was not a good idea?
<sounds like revised
the wrong way LG>
2949 Kaverznez actually is at opposition. 4073 Ruianzhongxue and 12867
Joeloic will
be in opposition in late September 2009, probably respectively at max magnitude V14.8 and 15.2. They will be easy targets
for some of us.
Lastly, I updated the MAP Database and put the measures of the MAP Objects observed since May 31; 77
new measures (and 4 new objects) were put in the database, mostly for 4080. I join this file.htm to this report.
Good future observations!
Gérard
Lawrence Garrett
ALPO Minor Planet Section Assistant Coordinator
mapalerts@myfairpoint.net
http://home.myfairpoint.net/lgasteroid1/map/
Gerard Faure
(8297) Gerardfaure
http://www.astrosurf.com/map
****************************************************
MAP Alert #322, August 28, 2009 see attachment page for files
Greetings MAP Observers!
Our first
in a weekend series of three MAP Alerts highlighting many observations, measurements, and success from our readers.
This first alert includes Roger Dymock's excellent lightcurve work, confirming the Andrew Salthouse observation's
that 4080 Galinskij was indeed in magnitude error. But not from an H magnitude error, but large amplitude in rotation.
As Gerard Faure would say, "out of the MAP".
But it has always been a "side mission"
of this project to direct those doing lightcurve work to our objects to resolve H value or amplitude as source of these magnitude
errors. Classic team work of visual and CCD observations are alive and well in 2009, for those with the skills and skies!
More observations of this object will appear in the next MAP alert. Roger's Lightcurve data attached is for reading
only, and may be posted to the Internet only with his permission, as I am sure these are MPB bound.
Roger writes:
Hi Lawrence,
Final results for (04080) Galinskij
24th August 2009: Max 14.48, Min 15.25, Average 14.87 JPL Horizons
14.52
25th August 2009: Max 14.45, Min 14.88, Average 14.88 JPL Horizons 14.64
26th August 2009: Max 14.52, Min
15.45, Average 14.99 JPL Horizons 14.47 Data for 26th and lightcurve attached. Also attached is a chart found via Petr
Pravec's website. The match is quite good - one is plotted 0.5 phase out of sync with
the other.
Regards
Roger
Dymock
Web Site Manager, Asteroids and Remote Planets Section, British Astronomical
Association
Email: roger.dymock@ntlworld.com
Tel: 023 92647986
Skype: rjvdymock
MPC Observatory Code: 940
BAA ARPS website: http://www.britastro.org/asteroids/
<end report>
Lawrence Garrett
ALPO Minor Planet Section Assistant Coordinator
mapalerts@myfairpoint.net
http://home.myfairpoint.net/lgasteroid1/map/
Gerard Faure
(8297) Gerardfaure> http://www.astrosurf.com/map
****************************************************
MAP Alert #321, August 20, 2009
Greetings MAP Observers!
Observations from Andrew Salthouse reports
a call for observations object in this short late August MAP alert.
Andrew writes August 18:
Greetings: Earlier
in August I attempted to observe 4080 Galinskij which reached its brightest around the 13th. It was higher in the sky than
most other asteroids this time of year (declination -5), yet I failed to see it on the first two nights (four attempts). I
then concluded that it must be dimmer than predicted and made a more determined effort to find it. My results are:
DATE & TIME UT PRED OBSVD
20090815.1250 14.2 not seen
20090815.1875 14.2 not seen
20090816.1042 14.2
not seen
20090816.1771 14.2 not seen
20090817.0937 14.2 14 1/2 - 3/4
20090817.1562 14.2 14 1/2 - 3/4
20090818.1217
14.3 14 3/4
It is forecast to be cloudy tonight and for several nights, so additional observations will have to wait
a few days. Has anyone else noted this discrepancy? It appears that it may be 1/4 to 1/2 mag fainter than predicted.
Regards, Andrew
Salthouse<end report>
If truly fainter then predicted, this object might approach 15th magnitude very quickly.
Hopefully another postive sighting in the next week of so can confirm these estimates. With my vacation at hand the next two
weeks, I will try this myself as well as others before the bright moon ends observing.
Lawrence Garrett
ALPO
Minor Planet Section Assistant Coordinator
mapalerts@myfairpoint.net
http://home.myfairpoint.net/lgasteroid1/map/
Gerard
Faure
(8297) Gerardfaure
http://www.astrosurf.com/map
*****************************************************
MAP Alert #320, July 18, 2009
Greetings MAP Observers!
A mid July MAP alert to highlight observations
from Gerard Faure, Richard Bookamer, and personal report from Vermont's rainy year without a summer.
Richard
writes: July 17
Greetings,
On Jul. 17 (UT) I made observation attempts for (1431) Luanda and (6560) Pravdo. The
two asteroids were located less than a degree apart in Sagittarius and both were predicted to be at 14.2 magnitude. I readily
viewed (1431) and made a GMv estimate of 14.1. I logged three positions for it in a 60-minute period. The level of difficulty
was just what I expected for an asteroid of that magnitude.
For 90 minutes I attempted to view (6560) but with
no success whatsoever. Both asteroids were at almost exactly the same elevation above the horizon, with identical viewing
conditions. I could easily move the telescope from one star field to the other in a few seconds. I re-checked my charts for
accuracy, and both Guide 8 and MegaStar 4.0 were in very good agreement so I don't think there was any charting error.
I also don't think that my estimate for (1431) has much error, so my suspicion is that (6560) was at least 0.5 magnitude
fainter than MPC predictions.
I am not making a call for observations, but if anyone else has magnitude estimates for
(6560) Pravdo, I am interested in their findings. I will also try for additional observations for a week or so until it becomes
too faint, according to predictions, for my situation.
Otherwise, I have done very little viewing for the past three
months, largely due to poor weather conditions. Of course, I get some good weather when the moon is too bright!
Clear
skies...
Richard Bookamer <End report>
While Richard does not believe a call for observations are in
order, we should look into this object, if only to find its a lightcurve dimming, or perhaps just haze of the summer putting
its two cents worth in.
Gerard has completed an article for publication in the Minor Planet Bulletin on our
best work and forwarded this to Brian Warner. He has also forwarded this update on his website work.
Hi to all,
Today, in the Astrosurf MAP website I put the last updates of the MAP Database on May 31,2009, the Recapitulative
List of MAP Objects also for May 2009 and the last list of H changes made by the MPC up to June 13,2009.
These
three files are downloadable at :
http://astrosurf.com/map/MAP_DATABASE_measures.zip
http://astrosurf.com/map/MAP_DATABASE_recap.htm
http://astrosurf.com/map/MAG_H_COMP.zip
This update of the MAP Database contains 495 asteroids, then
8 more than the previous database on March 01,2009
The MAP database nows contains 5542 measures (previously 5337 measures),
then 205 complementary measures made since the last update, 3 months ago.
This total of 204 measures is consisted of
140 CCD measures and 65 visual measures. In addition to the measures of the 8 new asteroids entered in the MAP database,
many new measures have been made for 20 old MAP objects.
On the total of the 495 asteroids of the database, 103
of them (20.8% of the total) have their original MAP difference of magnitude explained by the natural light variability
or by some inaccuracies of measures and then now have no need of new measures, while for about thirty objects, the MAP already
has a
good estimate of the difference of H magnitude.
Since September 2008, the Minor Planet Center changed
the H magnitude of 20892 numbered asteroids, up to June 13,2009. Among them, 39 MAP objects already have their H magnitude
concerned by the MPC corrections. The actual residual differences with the MPC are from 0.0 to 0.6 mag for
the
MAP objects seen at least during 3 oppositions (averaged 0.10 mag).
On the 382 asteroids requiring new measures,
the actual H magnitude differences are :
<0,3 magnitude for 47 asteroids
0,3 magnitude for 66 asteroids
0,4
magnitude for 63 asteroids
0,5 magnitude for 69 asteroids
0,6 magnitude for 44 asteroids
0,7 magnitude for
38 asteroids
0,8 magnitude for 24 asteroids
0,9 magnitude for 15 asteroids
1,0 magnitude for 03 asteroids
>1,0 magnitude for 08 asteroids
undefined magn.for 05 asteroids
For 267 of them (53,9% of the total),
the active lightcurve makers have permitted the knowledge of the data of asteroid lightcurve amplitudes.
A part
of the 495 objects of the MAP already have been observed on some oppositions :
0 opposition(s) for 2 asteroids
1 opposition(s) for 347 asteroids
2 opposition(s) for 89 asteroids
3 opposition(s) for 42 asteroids
4 opposition(s)
for 9 asteroids
5 opposition(s) for 4 asteroids
6 opposition(s) for 2 asteroids
For the MAP objects concerned
by a change of H magnitude, we continue to calculate the difference of H magnitude with the H magnitude of the first MAP measure(s),
but a final correction is made to take in account the change of the H magnitude by the MPC. Sometimes, a new averaged difference
of H magnitude is found.
Roger DYMOCK, Richard MILES (BAA) and Herbert RAAB (creator of the "Astrometrica"
software) reached to obtain a better accuracy of the unfiltered CCD measures of magnitude, thank's to the possible use
of the stellar CMC 14 catalog by Astrometrica.
For more details, see :
http://www.astrometrica.at/astrometrica.html
The magnitude types CMu and CMr [used with R-V = + 0.4 mag] are the types of measures made with this new method, in
the MAP Database.
Nearly ninety MAP asteroids already observed during two oppositions wait their third observed
opposition to obtain probably the definitive confirmation of their H magnitude difference and the publication of the results.
Then we shall be very interested by your new measures of the MAP objects in the future !
..But up to the
end of July, I shall be in China notably for the total Solar eclipse of July 22,2009 ! I shall return to the asteroids in
August.
Good end of July
Cheers
Gerard(end report>
Good trip to China Gerard!
On the personal side, a review of both observing, weather and others things
are in order here. First, after being out
of work since October 2008, my wife is back on the job this month. I have reduced time at work and hopefully be full time
again in the fall.
I also pass along my best hopes to all on this list who might have had or might be in line for such
work troubles, may they be short and as painless as possible.
Next, this is the year without summer here in the
Northeast,
or a rainy cold summer, whatever one wishes to call it. Blankets are back on the bed, daytime high temps are
the second lowest on record. Its rains about 75% of the days. This week
we had a tornado, and even large (50mm-75mm)
hail not far from here. Wife got caught in this mess on her first day on the job. (Not Tornado!)
But despite this,
I have had some observing success, not asteroids, but still in at least some game. Daytime as found a circumscribed halo around
the sun, taking advantage of the bad weather. No images, but a great sight. Next, I found out a few weeks ago the space station
would transit the Sun, with the center line right over the building I work! Really, only about 100 feet from where I work,
this was clouded out, but it was cool using goggle earth to zoom in on the workplace from space. Tomorrow will find another
transit north of here, hopefully seen this time. Spotted the latest progress mission naked eye.
I have also spent
a night trying for Iridium Debris flashes with object #33777, as from this message below. I will keep this on my observing
list, nice sat work guys!
<Stefano Sposetti and I have recently observed very bright flashes from the IRIDIUM
33 Debris1997-051Q (NORAD 33777). Some of the observed flashes were even brighter than magnitude -4. This make me believe
that the debris could be a big fragment of a Main Mission Antenna of the Iridium 33. Simone Corbellini>
Lawrence
Garrett
ALPO Minor Planet Section Assistant Coordinator
mapalerts@myfairpoint.net
http://home.myfairpoint.net/lgasteroid1/map/
Gerard Faure
(8297) Gerardfaure
http://www.astrosurf.com/map
****************************************************
MAP Alert #319, June 17, 2009
See attachment page for file
Greetings MAP Observers!
A report
from Gerard Faure highlights this mid June MAP alert.
His attachment is also included here.
Gerard Writes:
I
was very busy since the end of May, but I hope to have more free time soon...
Despite the lack of free time,
I made the measures of the CCD images taken during the night of May 29-30,2009 on some interesting MAP objects. Just
before the end of May, I reached to image some asteroids with my CCD camera, after two afternoons passed on the repairing
of my GP-DX mount with
the help of a friend and one night of tests....
The night of the images, the sky was starry
up to 01H00 TU and I imaged 6 MAP asteroids, notably the five urgent goals : 1300 Marcelle
870 Manto
5231
Verne
3873 Roddy
2612 Kathryn I used Astrometrica and the CMC14, and obtained these results in the R band
: COD XXX
CON G.Faure, F-38650 Chateau-Bernard France [gpmfaure@club-internet.fr]
OBS G.Faure
MEA G.Faure
TEL 0.2m f/10.0 reflector + CCD
ACK MPCReport file updated 2009.06.08 00:30:37
AC2 gpmfaure@club-internet.fr
NET CMC-14 00870 C2009 05 29.94213 14 39 02.17 -04 36 15.9 14.11R XXX AR3
00870 C2009 05 29.94437 14 39 02.07
-04 36 15.9 14.10R XXX AR3
00870 C2009 05 29.94573 14 39 01.99 -04 36 16.1 14.03R XXX AR3 01300 C2009 05 29.90970
14 00 39.13 -02 42 23.0 15.40R XXX AR3
01300 C2009 05 29.91342 14 00 38.97 -02 42 24.9 15.28R XXX AR3
01300 C2009
05 29.91916 14 00 38.86 -02 42 24.7 15.31R XXX AR3
01300 C2009 05 29.92206 14 00 38.81 -02 42 25.3 15.37R XXX AR3
01300 C2009 05 29.92432 14 00 38.69 -02 42 25.7 15.36R XXX AR3
01300 C2009 05 29.93000 14 00 38.54 -02 42 26.3 15.37R
XXX AR3
01300 C2009 05 29.93089 14 00 38.51 -02 42 26.4 15.38R XXX AR3
01300 C2009 05 29.93179 14 00 38.47 -02 42
26.5 15.43R XXX AR3
01300 C2009 05 29.93269 14 00 38.45 -02 42 27.0 15.47R XXX AR3
01300 C2009 05 29.93538 14 00
38.38 -02 42 27.2 15.41R XXX AR3
01300 C2009 05 29.93628 14 00 38.34 -02 42 27.3 15.38R XXX AR3 02612 C2009 05
29.96050 14 29 51.95 +15 31 35.4 15.19R XXX
AR3
02612 C2009 05 29.96271 14 29 51.92 +15 31 35.2 15.09R XXX AR3
02612 C2009 05 29.96563 14 29 51.84 +15 31 34.5 15.33R XXX AR3
02612 C2009 05 29.96714 14 29 51.77 +15 31 33.8 15.33R
XXX AR3
02612 C2009 05 29.98970 14 29 51.07 +15 31 27.2 15.13R XXX AR3
02612 C2009 05 30.02060 14 29 50.14 +15 31
18.4 15.07R XXX
AR3
02612 C2009 05 30.02212 14 29 50.06 +15 31 17.4 15.19R XXX AR3
02612 C2009 05 30.02429
14 29 50.05 +15 31 17.3 15.35R XXX AR3 03873 C2009 05 30.07285 16 45 18.06 -21 57 18.2 14.34R XXX AR4
03873 C2009
05 30.07418 16 45 17.84 -21 57 17.0 14.18R XXX AR4 05231 C2009 05 29.94707 14 35 16.18 +00 38 40.2 15.91R XXX AR3
05231 C2009 05 29.95025 14 35 16.05 +00 38 39.9 15.87R XXX AR3
05231 C2009 05 29.95387 14 35 15.89 +00 38 38.9 15.82R
XXX AR3
05231 C2009 05 29.95488 14 35 15.85 +00 38 39.0 15.75R XXX AR3
05231 C2009 05 29.95591 14 35 15.79 +00 38
38.8 15.89R XXX AR3 06406 C2009 05 30.04994 15 29 45.59 -04 36 34.4 15.74R XXX AR3
06406 C2009 05 30.05279 15 29
45.36 -04 36 34.7 15.84R XXX AR3
----- end -----
I put the V-R index = +0.4 mag to the R measures and obtained
:
870 Manto CMr V14.5 B/1.41 (with the basis of H MPC from 2008)
1300 Marcelle CMr V15.8 F/0.37
2612 Kathryn
CMr V15.6 F/0.21
3873 Roddy CMr V14.6 F/1.36
5231 Verne CMr V16.3 F/0.45
6406 1992 MJ CMr V16.2 F/0.49
Very good results and work Gerard!
Lawrence Garrett
ALPO Minor Planet Section Assistant Coordinator
mapalerts@myfairpoint.net
http://home.myfairpoint.net/lgasteroid1/map/
Gerard Faure
(8297) Gerardfaure
http://www.astrosurf.com/map
****************************************************
MAP Alert #318, May 3, 2009
See attactments page for file
Greetings MAP Observers!
Observations
and news from Gerard Faure, Andrew Salthouse, and Brian Warner highlight this weekend MAP Alert.
Gerard sends
his work in attachment MAP-OBS_09-04-26.htm
Gerard writes May 1
Hi to all,
During the last
period of ten days, lastly I was under the stars, but during two hard nights, due to the north wind for the beginning of the
first night and to the south wind and frequent clouds during the second night.
Nevertheless, I reached to observe
visually nine asteroids, notably five old MAP objects and even a new MAP object !
Night of April 23-24,2009 :
---------------------------
1676 Kariba v14.8
3913 Chemin v14.9-15.0 F/0.4-F/0.5 old MAP object
1783 Albitskij
v15.1
6398 Timhunter v15.3-15.5 F/0.1-F/0.3 old MAP object
93768 2000 WN22 v15.3-15.4 F/0.5-F/0.6 New MAP object
Night of April 24-25,2009 :
---------------------------
870 Manto v14.7-14.6-14.8 F/0.4-F/0.3-F/0.5 Old
MAP Object
3901 Nanjingdaxue v15.2-15.2
1300 Marcelle v15.4-15.3 F/0.6-F/0.5 Old MAP object
1909 Alekhin v15.5-15.4
F/0.7-F/0.6 Old MAP object
I observed (870) Manto, (1300) Marcelle and (3913)Chemin for their third observed
opposition by the MAP !!
The discrepancy of magnitude is confirmed for these three MAP objects !
Recently,
the MPC changed the H magnitude of Manto from
H = 13.1 to H = 11.6
There were other changes in the past :
H =11.8(EMP 1988 => 1991); H =12.1(EMP 1992 => 1997); H =13.1(EMP 1998 => 2008).
The new provisional MAP difference
is F/0.6 after the previous B/0.9.
Despite difficulties - wind and bright star near it - it seemed fainter than the
new predicted V14.3.
It's a very interesting object which deserves new measures to verify the quality of the change
of the H magnitude by the MPC
The new measures in the MAP Database are calculated with the previous H magnitude of 13.1
to permit the comparison with the old measures, but the change is taken in account on the last line of the MAP Database for
this object.
The faintness of the H magnitude of (1300) Marcelle is confirmed, but I was the only observer to
follow it up to now. It would be a very useful thing to obtain quickly measures from at least 2 other observers...
6
observers and 21 measures permitted to obtain the guaranty of the faintness of (3913) Chemin. It's the same thing for
(1909) Alekhin with 4 oppositions, 4 observers and 33 measures, thank's notably to Roger Dymock !
I observed
the Mars-crosser (93768) 2000 WN22, fainter than (1783) Albitskij and (1676) Kariba. It's about 0.5 mag fainter than predicted.
This is another new MAP Object !
On the contrary, (6398) Timhunter is marginally fainter than predicted.
My measures reduce the averaged discrepancy of magnitude to 0.06 mag. This object, but also 2008 SV11, now with an averaged
discrepancy of magnitude reduced to 0.02 mag, are "out of MAP".
John Fletcher using a starlight Xpress
camera (band about V), I removed the R-V index of +0.4 magnitudes for his measures of 2008 SV11 made with the CMC14, but also
for the measures for the Aten (5604) 1992 FE also made with the CMC14.
In conclusion, it will be VERY INTERESTING
to obtain NEW measures for at least ***(1300) Marcelle and (870) Manto***, but other old MAP objects wait their celibrity
;-) in the next MAP Report, in May 2009 :
6823 1988 ED1 15,2 20090421
2612 Kathryn 15,0 20090422
4497
Taguchi 15,9 20090427 **
2670 Chuvashia 15,2 20090425
5231 Verne 15,5 20090503 ***
I shall be alas out
of internet and far from my telescope for one week !
Good future observations and good weekend !
Cheers
Gérard <end report>
Excellent new MAP asteroid Gerard, call for observations for all who can reach
93768 2000 WN22.
Andrew Salthouse and Brian Warner write today, May 3.
Andrew Salthouse
Colleagues:
I'm just reporting that I failed to observe 3895 Earhart in spite of eight attempts, as follows:
Date/Time
Predicted Result
2009 04 24.1441 14.8 not vis
2009 04 24.1997 14.8 not vis
2009 04 25.1406 14.8 not vis
2009 04 25.2031 14.8 not vis
2009 04 26.1563 14.8 not vis
2009 04 26.2170 14.8 not vis
2009 04 27.1441 14.8
not vis
2009 04 27.2049 14.8 not vis
The predictions are from MPC. You can see that I made two attempts each
night on four consecutive nights. On the same nights there were several other asteroids at nominal mag 14.7 to 14.8 that I
observed, though not easily. 3895 was also at a higher altitude in the sky than any of the others.
Did anyone
succeed in observing this object? I did not see it mentioned in any of the April posts. <end report>
Brian
replies:
Andrew,
I observed this asteroid on two nights, April 20/21. It has a period of ~3.5 h and
amplitude of 0.28 mag. On April 20, it was ~14.5 R. Assuming V-R = 0.45, that puts it V = 14.95, or about 0.1-0.2 mag
fainter than predicted. You should have seen it.
Clear Skies,
Brian D. Warner
Palmer Divide Observatory
http://www.MinorPlanetObserver.com
Collaborative Asteroid Lightcurve Link (CALL)
http://www.MinorPlanetObserver.com/astlc/default.htm<end
report>
It seems this was indeed a little fainter then predicted, and perhaps beyond limits of conditions but
not a MAP object. A good example of two observers working to resolve an issue with
this object.
Lawrence
Garrett
ALPO Minor Planet Section Assistant Coordinator
mapalerts@myfairpoint.net
http://home.myfairpoint.net/lgasteroid1/map/
Gerard Faure
(8297) Gerardfaure
http://www.astrosurf.com/map
****************************************************
MAP alert #317, April 29, 2009
see attachment page for file
Greetings MAP Observers!
A very large
report this alert with many observations from our observers. I had hoped to join them this time around with sightings of my
own so delayed this report in such hopes. I have had luck, but first let us review the success below. Gerards MAP-OBS_09-04-20.htm
is attached.
Gerard writes:
Hi to all,
Since the last news of the MAP ALert 316, there
were many measures made by John Fletcher, Roger Dymock and Richard Miles !
I already updated the file of the new
MAP measures, corrected it for some inperfect falling words and send it with this email, after the inclusion of some modifications
on data, notably the measures from Roger Dymock for the objects (1909) Alekhin and (4437) Yaroshenko. As these measures were
made with a V filter, I removed the V-R index (0.4 mag). The corrected measures for Alekhin are in better agreement with the
previous measures.
On April 13 then 18 and 19, John imaged again the NEA 2008 SV11 and a NEW MAP Object (5604)
1992 FE fainter then predicted by the MPC. This asteroid 5604 is an Aten.
(1909) Alekhin was imaged again by Roger
Dymock on April 17 and 19
Richard Miles made a long run on 2008 SV11 on April 01.
He wrote :
"Please
note that on 2009 April 01 20:05-01:53 UT, I made 1,351 measures of the V magnitude of 2008 SV11. The mean magnitude was 13.221
compared to the predicted magnitude for my location by JPL Horizons of V=13.24. So no significant deviation from the
adopted H value was found. The amplitude of variation was 0.17 mag in about 6 hours, showing one
minimum at JD 2,454,923.54
and the probable rotation period is significantly more than 24 hours."
I wait the answers of some questions
on the obtained measures, then may be the final measures will change.
Actually, we have :
31 measures
for (1909) Alekhin with an averaged F/0.4
9 measures for (5604) with an averaged F/0.9
16 measures + the batch of
measures from Richard for 2008 SV11, with a provisional F/0.3 for the actual MPC H magnitude of 18.4
I remember
to you that other important objects wait new measures, before the making of a Report in May 2009 :
(with the predicted
MPC maximum V magnitude and the opposition date)
6821 Ranevskaya 15,5 20090309
1909 Alekhin 14,0 20090324
***
3913 Chemin 14,5 20090415 ***
6823 1988 ED1 15,2 20090421
2612 Kathryn 15,0 20090422
4497 Taguchi
15,9 20090427 **
2670 Chuvashia 15,2 20090425
1300 Marcelle 14,8 20090426
5231 Verne 15,5 20090503 ***
870
Manto 14,1 20090508 **
For Manto, the MPC changed the H magnitude from H = 13.1 to H = 11.6 and then the new provisional
MAP difference is F/0.6
Before, it was B/0.9 !
I hope to update again the data on the modifications of the
MPC H magnitudes since January 2009, this week... But I have many things to do, notably my first April observations may be
Wednesday and Thursday evenings ?
During the preparation of my observation program for these next nights, I found
that the reknown Amor (887) Alinda will be visible in May 2009, at mag V16.6, high in the sky at +18° of declination.
It will never brighter before 2024, then at mag V15.0 but at -20° of declination !
I shall try to see it in a bigger
telescope than my C8 in May.
Lastly, I put a new file of the French Webpage.
This file.htm is an update
of the MAP Report 1996-2006 but including new data and images. Its name is"REPORT_MAP_1996-2009"
I presented
it to the Meeting of the Société Astronomique de Lyon" in the south of France. I apologize for the
text in French, but I had no time up to now to translate it in English. Nevertheless, even without an translation by a
software, many images and tables are interesting to look at.
You can download it at :
http://astrosurf.com/aude/map/REPORT_MAP_1996-2009
Good luck for your next observations !
Gerard <end report>
An excellent group report, our members
are keeping very busy. I have been playing "cloudy tag" these past 10 days or so, hoping for at least a shot at
making a report here as well. I did see one very bright asteroid to add to my totals and a comet. Last night I took the time
to get up around 1:45am
for the shadow of Titan on Saturn. I did see it, but the skies alone, very clear and transparent
were very welcome, in that such sights like that are still possible here. Asteroids will follow!
Lawrence Garrett
ALPO Minor Planet Section Assistant Coordinator
mapalerts@myfairpoint.net
http://home.myfairpoint.net/lgasteroid1/map/
Gerard Faure
(8297) Gerardfaure
http://www.astrosurf.com/map
*****************************************************
MAP Alert #316, April 15, 2009
See attachment page for file
Greetings MAP Observers!
Gerard Faure forwards a large report of recent observations entered in the MAP database for the review and additional observations.
We have observations from, Roger Harvey, John Fletcher, Roger Dymock, and includes follow up on
observations made by
Andrew Salthouse last month.
Please note Gerards attachment as well.
Gerard Writes:
Thank's
to Roger Harvey, a second observed opposition for 2939 Coconino was made on March 21; It will be interesting to confirm again
its probable faintness of 0.5 magnitude.
John Fletcher again observed various MAP objects :
(16958)
Klaasen (Mars-crosser)
------------------------------
C2009 03 22.00649 12 21 54.75 +51 52 04.4 15.9 UMr
C2009
03 22.00931 12 21 54.79 +51 52 12.8 15.9 UMr
C2009 03 22.01212 12 21 54.71 +51 52 20.3 15.9 UMr
C2009 03 29.85160
12 21 07.42 +57 13 53.4 16.4 UMr
C2009 03 29.85582 12 21 07.26 +57 14 02.4 16.4 UMr
C2009 03 29.86216 12 21 07.15
+57 14 15.5 16.4 UMr
I put +0.4 mag to the unfiltered USNO-B magnitudes measured by John, to take in account the
V-R index. The differences of mag are F/0.4 (March 22) and F/0.7 (March 29)
(14402) 1991 DB (Amor 2)
------------------------
C2009 03 23.00711 16 07 04.35 +33 32 34.0 16.14 CMr
C2009 03 23.00992 16 07 06.20 +33 32 41.5 16.15 CMr
C2009
03 23.01553 16 07 09.90 +33 32 56.9 16.25 CMr
I put +0.4 mag to the unfiltered CMC14 magnitudes measured by John,
to take in account the V-R index.
MAP difference = F/1.0 mag
2008 SV11 (Apollo 3)
--------------------
C2009 03 29.91708 05 37 43.83 +54 49 42.0 15.7 UMr
C2009 03 29.91740 05 37 45.77 +54 49 42.0 15.6 UMr
C2009 03
29.91772 05 37 47.65 +54 49 42.1 15.7 UMr
C2009 04 02.04098 10 03 54.39 +31 52 39.8 13.3 CMr
C2009 04 02.04134
10 03 55.35 +31 52 25.8 13.3 CMr
C2009 04 02.04171 10 03 56.34 +31 52 11.8 13.3 CMr
I put +0.4 mag to the
unfiltered USNO-B and CMC14 magnitudes measured by John, to take in account the V-R index. MAP difference = F/1.2 mag (March
29) and F/0.4 (April 02), but the MPC changed its H mag from 18.2 to 18.4;
2008 SV11 is a new MAP Object, with an averaged
H difference of F/0.6 !
Roger Dymock also took CCD images and MAP measures from the interesting MAP objects
(1909) Alekhin and (4437) ,with the 61cm Sierra Stars robotic telescope :
(1909) Alekhin
--------------
C2009 03 24.30943 12 08 21.01 -03 35 36.6 CMr 14.46
C2009 03 24.31059 12 08 20.94 -03 35 36.1 CMr 14.46
C2009
03 24.31175 12 08 20.89 -03 35 35.7 CMr 14.49
C2009 03 24.31291 12 08 20.81 -03 35 35.4 CMr 14.47
C2009 03 24.32332
12 08 20.25 -03 35 31.2 CMr 14.50
C2009 03 28.32072 12 04 51.73 -03 09 02.5 CMr 14.80
C2009 03 28.32211 12
04 51.65 -03 09 02.0 CMr 14.81
C2009 03 28.32350 12 04 51.58 -03 09 01.4 CMr 14.81
C2009 03 28.32488 12 04 51.49
-03 09 00.7 CMr 14.81
I put +0.4 mag to the unfiltered CMC14 magnitudes measured with the Astrometrica software
by Roger, to take in account the V-R index. MAP difference = F/0.9 mag (March 24) and F/1.1 (March 28)
This same
object was also measured by Andrew Salthouse, with 4 visual measures made also in March 2009 and reported in the last MAP
Alert by Lawrence.
The averaged H difference of (1909) Alekhin is F/0.7 and now we have 4 oppositions, a continuous
discrepancy of magnitude and 4 observers. We have a very good object for the next MPB publication !
For (6398)
Timhunter seen by Andrew for its second MAP opposition, Guide 8 gives the predicted V15.0 to V14.9 then the differencies of
magnitude are B/0.5, and B/0.4 for the last measure. The averaged difference for all the measures give B/0.13. May be this
Phocaea object only is variable...
Lastly, Roger Dymock also made measures on (4437) Yaroshenko which is
an object seen with a problem of magnitude before the MAP birth, by Roger
Harvey in March 1994 with F/0.7 :
(4437) Yaroshenko (Eurynome)
----------------------------
C2009 03 24.30480 11 57 58.76 -05 34 23.5 CMr 15.04
C2009 03 24.30596 11 57 58.69 -05 34 23.0 CMr 15.06
C2009 03 24.30712 11 57 58.62 -05 34 22.6 CMr 15.06
C2009
03 24.30828 11 57 58.56 -05 34 22.1 CMr 15.01
C2009 03 28.31123 11 54 38.84 -05 02 06.5 CMr 15.74
C2009 03 28.31262
11 54 38.76 -05 02 05.8 CMr 15.73
C2009 03 28.31400 11 54 38.69 -05 02 05.1 CMr 15.72
C2009 03 28.31539 11 54 38.62
-05 02 04.4 CMr 15.73
C2009 03 28.31678 11 54 38.55 -05 02 03.8 CMr 15.73
Then it's a new MAP Object,
with already two observed oppositions !!
I put +0.4 mag to the unfiltered CMC14 magnitudes.
Congratulations
to the measurers !
If you wish, the most important objects before the making of a Report in May 2009 are :
(with the predicted MPC maximum V magnitude and the opposition date)
6821 Ranevskaya 15,5 20090309
1909
Alekhin 14,0 20090324 ***
3913 Chemin 14,5 20090415 ***
6823 1988 ED1 15,2 20090421
2612 Kathryn 15,0 20090422
4497 Taguchi 15,9 20090427 **
2670 Chuvashia 15,2 20090425
1300 Marcelle 14,8 20090426
5231 Verne 15,5 20090503
***
870 Manto 15,6 20090508 **
Good luck !
Gerard
While no asteroids have come my way, I did
manage to see Comet Yi-SWAN, found but unnamed for Rob Matson who I exchange messages with on satellite/comet info.
Lawrence Garrett
ALPO Minor Planet Section Assistant Coordinator
mapalerts@myfairpoint.net
http://home.myfairpoint.net/lgasteroid1/map/
Gerard Faure
(8297) Gerardfaure
http://www.astrosurf.com/map
****************************************************************
MAP Alert #315, March 24, 2009
See attachments page for file
Greetings MAP Observers!
The March
MAP alerts keep marching along with reports from Gerard Faure, Roger Harvey John Fletcher and Andrew Salthouse. Plus,
upcoming NEA 2009 FD keeps close and bright asteroids in our skies. A predicted 13th magnitude object, with
a 1.6 LD
this March 28.
First of all, Andrew Salthouse has reached A2k, 2000 asteroid visually seen! Wow, a full
2000 congratulations go out to him, just the forth person to reach such a personal milestone in asteroid astronomy.
Roger Harvey:
March 21 2939 Coconino F/0.5 @ 15.3 4:52 and 6:50 UT I missed 18590 1997 YO10 last night, it must be fainter than 14.9 as advertised.
I also
missed 37601 Vicjen and suspect it is fainter than 15.3 advertised.
John Fletcher sends Gerard new measures for 16958 Klaasen
COD J93
OBS
John Fletcher
MEA John Fletcher
TEL 0.25-m f/5.5 Schmidt-Cassegrain + CCD
ACK MPCReport file updated 2009.03.22
02:17:12
AC2 jfmto@blueyonder.co.uk
NET NOMAD
16958 C2009 03 22.00649 12 21 54.81 +51 52 04.4 16.28V
16958 C2009 03 22.00931 12 21 54.81 +51 52
12.6 16.18V
16958 C2009 03 22.01212 12 21 54.71 +51 52 20.3 16.07V
J93
Gerard Writes:
Hi to all,
As predicted, I observed during the last night, but the turbulence
prevented to observe faint objects. Nevertheless,
I reached to observe four
objects, but alas not 1909 Alekhin, because it was too late. I hope that
someone reached
or will reach to observe this MAP object waiting its
inclusion in a MAP Report.
During the night of March
21-22,2009 I observed, with incertainty +/-0.1 mag :
1743 Schmidt v14.9-15.0
1406 Komppa v15.2-15.2-15.1 F/0.5-F/0.4-F/0.4
New MAP Object
3453 Dostoevsky v15.3-15.4 F/0.5-F/0.6 MAP Opposition N°2
3560 Chenqian v15.6 During the
evening of March 16,2009 I Observed my smallest asteroid 2009 DO111
(H = 22.6) at v14.6-14.8, thank's to the MPES
positions. With the same
orbital elements, Guide 8 gave positions 1.3° far south...!!!
After, I tried
to observe 1406 Komppa, without success and thought that it
was fainter than predicted. I confirmed this fact during
the last night.
Komppa is a new MAP Object (Please note above as well) Otherwise, I observed again 3453 Dostoevsky,
already seen in 2006 with a
discrepancy of H magnitude. I was the only observer of it, up to now. It
would be interesting
to have measures from another observers. I join the Excel file of the last measures since the last update of the MAP
Database of March 01,2009.
(this is attached)
In January 2009, the MPC changed the H magnitude for 31368
from 12.0 to 12.3. The true difference of H magnitude in 03/2009 found by Roger Harvey then is F/0.4 for the MAP, because
the MPC changed the H magnitude before the inclusion of this object in the MAP Database. <end report>
Quite
a report all. I am hoping for clear skies for tomorrow night for 2009 FD to get my own asteroid viewing off to a start
in 2009.
Lawrence Garrett
ALPO Minor Planet Section Assistant Coordinator
mapalerts@myfairpoint.net
http://home.myfairpoint.net/lgasteroid1/map/
Gerard Faure
(8297) Gerardfaure
http://www.astrosurf.com/map
*****************************************************************
MAP Alert #314, March 22, 2009
Greetings MAP Observers!
Once again, Gerard's work allows me to double mine this weekend, balanced between home chores and this weekends MAP
Alert. Thank you Gerard and Roger for your observations of course.
Roger reports:
March 22, 4285 Hulkower
F/0.5 @ 15.8 mv, a good CCD object.
As for my own observing, last year found a decades low 6 objects reported to Prof. Pilcher for his yearly report in the
minor planet bulletin. I still continue to test the skies when I can here, but the tests they pass are getting worse by the
year. Just last weekend I failed to see two 13.8 Mv objects. But I plan to keep trying on the best nights and see just what
can still be found, not wanted to be hauled at 1238 asteroids seen.
As backup objects, I turned my attention to the Iridium 33 satellite fragments now nightly
visible. They should be visible, they are now a few 100 strong. I targeted a large radar cross section object was found online,
and I pointed my 12.5" at 49x eyepiece to a predicted passage field. I expected this to cross the field in a flash
and was not dispointed. While we have all seen meteors flash by the field of view, these for sure are not meteors.
I had my Father count time from a atomic clock and then the (about) 1.5 second show began and ended on the spot. To my amazement,
object 33775 crossed the field producing a lightcurve show that included two maximum's and minimum's, from about magnitude
8 to invisible and back again. Perhaps the best 1.5 seconds one might see in the telescope. Two razor thin beams of light
displaying rotation like none I have ever seen. These reports are due to appear on spaceweather.com.
And while one believe this class of object might be "see
one and you have seen them all", two more objects seen the same night suggest you will have to hunt many to any really
the same. I have seen two more fragments in my 20x 80mm binoculars and followed them for more then a minute, but these
seem pale to the close up shows. I have spotted the main satellite Iridium 33 and its complex lightcurve, bright flashes and
all. So if you cannot produce lightcurves for the minor planet bulletin, these casual nights at the telescope will at least
allow you to spot curves perhaps no asteroid will ever produce.
Lawrence Garrett
ALPO Minor Planet Section Assistant Coordinator
mapalerts@myfairpoint.net
http://home.myfairpoint.net/lgasteroid1/map/
Gerard Faure
(8297) Gerardfaure
http://www.astrosurf.com/map
*****************************************************************
MAP Alert #313 March 20, 2009
Posted by Gerard Faure
Greetings MAP Observers:
As Lawrence is busy, I send this new MAP Alert.
On March 18,2009 Roger
Harvey "found" two new objects with a discrepancy of magnitude :
(31368) 1998 WW23 F/0.7 at mag v15.7 (observations
3:30 and 4:45 UT)
2009 FH 0.4 to 0.9F at mag v15.0 to v15.5 (observations 0:47 to 1:55 UT)
This small NEA
has H mag = 26.6 ! It's now at mag 22, out of reach for most of the observers.
I analyzed again the data from
John Fletcher (March 01) and detected a new
MAP object imaged by him :
(16958) Klaasen (Mars-crosser) with an apparent
difference of F/0.9
The measures with the USNO-B seem to be mainly R rather than V, then the observed magnitudes have
been put in the MAP Database with + 0.4 mag to calculate the possible difference of H magnitude:
Measures from
John :
16958 C2009 03 01.85237 12 19 34.58 +30 26 25.7 15.8 V
16958 C2009 03 01.85800 12 19 34.68 +30 26 51.2 15.8
V
16958 C2009 03 01.86362 12 19 34.81 +30 27 16.6 16.0 V
Otherwise, I put on the Astrosurf/MAP webpage :
1) the html file of "the MAP database Recap"
2) the zipped Excel file of the Database of the "MAP measures"
3)the "Annual program of the MAP for 2009".
This Annual MAP program for 2009, joined to this mail,
contains all the MAPobjects known on March 01,2009 and which will be in opposition during the year 2009.
The main
goals are the MAP objects which already have been observed during at least 2 oppositions, to obtain soon a revised H magnitude.
The actual interesting targets are :
3106 Morabito M2 F/0.7? opposition 2009-02-11 now V15.8 MPC
12193
1979 EL M2 F/0.3? opposition 2009-03-07 now V16.1 MPC
6821 Ranevskaya M2 F/0.6? opposition 2009-03-09 now V15.5 MPC
1909 Alekhin M3 F/0.5? opposition 2009-03-24 max V14.0 MPC***
6009 1990 FQ1 M2 F/0.4? opposition 2009-04-14 max V15,2
MPC
3913 Chemin M2 F/0.4? opposition 2009-04-14 max V14,5 MPC
2612 Kathryn MZ F/0.6? opposition 2009-04-22 max V15,0
MPC
Otherwise, the actual bright MAP objects, with one opposition, are :
3453 Dostoevsky max V14.6 MPC
5153 1940 GO max V14.3 MPC
1909 Alekhin max V14.0 MPC already given
2939 Coconino max V14.5 MPC
Good
luck !
Cheers
Gerard Faure
(8297) Gerardfaure
http://www.astrosurf.com/map
Lawrence Garrett
ALPO Minor Planet Section Assistant Coordinator
mapalerts@myfairpoint.net
http://home.myfairpoint.net/lgasteroid1/map/
***************************************************************
MAP Alert #312, March 8, 2009 -
See our attachment page for database file
By Gerard Faure
Hello to all,
I am pleased to announce that
the update of the MAP Database is available ! I join the webpage of the Recapitulative data of this MAP Database to this email.
Soon, you will have the possibility to download the zipped Excel file of the MAP measures on the various MAP websites.
This update of the MAP Database contains 487 asteroids, then 18 more than the previous database on July 15,2008.
The MAP database nows contains 5337 measures (previously 5138 measures), then 199 complementary measures made since the
last update, 7.5 months ago.
This total of 199 measures is consisted of 118 CCD measures and 81 visual
measures.
In addition to the measures of the 18 new asteroids entered in the MAP
database, many new measures have
been made for 24 old MAP objects.
On the total of the 487 asteroids of the database, 89 of them (18.2% of the
total)
have their original MAP difference of magnitude explained by the
natural light variability or by some inaccuracies of
measures and then now
have no need of new measures, while for about thirty objects, the MAP
already has a good estimate
of the difference of H magnitude. The revised H magnitude has been published for 16 asteroids in the Minor Planet Bulletin
34-4.
On the 398 asteroids requiring new measures, the actual H magnitude
differences are :
< 0,3
mag for 56 asteroids
0,3 mag for 60 asteroids
0,4 mag for 59 asteroids
0,5 mag for 70 asteroids
0,6 mag
for 51 asteroids
0,7 mag for 38 asteroids
0,8 mag for 26 asteroids
0,9 mag for 19 asteroids
1,0 mag for
5 asteroids
> 1,0 mag for 9 asteroids
indefined mag. for 5 asteroids
For 269 of them (55% of the
total), the active lightcurve makers have
permitted the knowledge of the data of asteroid lightcurve amplitudes.
A
part of the 487 objects of the MAP already have been observed on some
oppositions :
0 opposition for 2 asteroids
1 opposition for 345 asteroids
2 oppositions for 89 asteroids
3 oppositions for 39 asteroids
4 oppositions
for 8 asteroids
5 oppositions for 2 asteroids
6 oppositions for 2 asteroids Since September 2008, the Minor
Planet Center began to change some
erroneous H magnitudes among the numbered asteroids, for the first time
since
ten years.
Between September 2008 and January 2009 (the month of the last analysis
made by the MAP), the MPC
changed 12425 H magnitudes among the 204962 numbered asteroids known in January 2009.
Only 25 MAP objects were concerned.
For 12 of them, the new H MPC actually is equal (0.0 or 0.1 mag of difference) to the revised H MAP. For the MAP objects
concerned by a change of H magnitude, we continue to calculate the difference of H magnitude with the H magnitude of the first
MAP measure(s), but a final correction is made to take in account the
change of the H magnitude by the MPC. Sometimes,
a new averaged difference of H magnitude is found.
Lastly, Roger DYMOCK, Richard MILES (BAA) and Herbert RAAB
(creator of the "Astrometrica" software) reached to obtain a better accuracy of the unfiltered CCD measures of magnitude,
thank's to the possible use of the stellar CMC 14 catalog by Astrometrica. For more details, see :
http://www.astrometrica.at/astrometrica.html
The magnitude types CMu and CMr [used with R-V = + 0.4 mag] are the types of measures made with this new method, in
the MAP Database.
Nearly ninety MAP asteroids already observed during two oppositions wait
their third observed
opposition to obtain probably the definitive
confirmation of their H magnitude difference and the publication of the
results !
Then we shall be very interested by your new measures of the MAP objects in the future !
AUDE
Web Pages
Gerard Faure
(8297) Gerardfaure
http://www.astrosurf.com/map
Lawrence Garrett
ALPO Minor Planet Section Assistant Coordinator
mapalerts@myfairpoint.net
http://home.myfairpoint.net/lgasteroid1/map/
**************************************************************
MAP Alert #311, March 6, 2009
Greetings MAP Observers:
A
report from Gerard Faure highlights this March MAP alert. John Fletcher's report is also included below with NEO
measurements. I wish to also thank ALBERTO QUIJANO VODNIZA University of Nariño Observatory Pasto,
Nariño. COLOMBIA, for his images of asteroid 2009 DD45 which were featured at spaceweather.com.
Quite a dramatic
show with this fast moving NEA.check the March 2 page at Spaceweather if you missed it.
Gerard writes:
Hi to all
Finally, as I had apparently a future good night during the next week-end,
I decided
to observe during the night of February 27-28,2009 despite many
MAP works in progress.
For
the first time in 2009, I saw 9 asteroids, 1 comet (C/2007 N3 Lulin)
and "my" possible variable star (KISO
C2-97). Therefore, it was impossible to observe faint objects near and over v16, due to a very thin layer of high clouds.
I observed :
(52768) 1988 OR2 v14.3 B/0.2 Amor 3
(1343) Nicole v14.5-14.5
(1237)
Genevieve v14.7-14.8
(1848) Delvaux v14.8-14.8 B/0.2
(2460) Mitlincoln v14.9-14.9 F/0.2 old MAP object
(1109)
Tata v15.0-15.0
(2111) Tselina v15.0-15.0
(4606) Saheki v15.3-15.2 F/0.4-F/0.3 "new"MAP Object
(959)
Arne v15.6-15.5 F/0.5-F/0.4 recent MAP Object
(2460) Mitlincoln was seen for the third opposition.
As the averaged
difference of H magnitude now is very low (about 0.11 magnitude fainter)
with a half-amplitude of
variability equal to 0.07, I put the object "Out
of MAP"
(4606) Saheki has been observed
before the MAP birth by Roger Harvey in
January 1992, at F/0.7 mag. I chosed it to verify this old suspect and
found
a discrepancy of magnitude of F/0.4-F/0.3 mag. Its problem on the H magnitude now is confirmed and I included it in the MAP
Database, with two oppositions already observed. (959) Arne, with a discrepancy of F/0.5-F/0.4, and
recently found as a new
MAP Object by Roger, effectively has a problem of H magnitude. In the past, its H magnitude varied
from 10.7 to 10.2, in the EMP 1998.
Then I put 6 new measures of magnitude in the MAP Database,
up to now
stopped on February 28,2009 with a total of 486 asteroids and 5328
measures. I am on the end of the update
of the MAP Database...
Therefore, I received a mail from John Fletcher who observed on March
01,2009 some NEA, notably the NEA N°(162900)2001 HG31 (Amor 2) and
(14402)1991 DB (Amor 2) which are MAP objects
:
14402 C2009 03 01.93096 12 36 36.03 +06 25 27.5 16.1 V J93
14402 C2009 03 01.93447 12 36 37.31
+06 25 41.0 15.9 V J93
14402 C2009 03 01.93797 12 36 38.42 +06 25 55.4 16.1 V J93
G2900 C2009 03 01.89948 07 09
35.49 +38 30 10.3 16.2 V J93
G2900 C2009 03 01.90299 07 09 36.33 +38 30 06.4 16.3 V J93
G2900 C2009 03 01.90910
07 09 37.69 +38 29 59.1 16.3 V J93
Clear Skies
Lawrence Garrett
ALPO Minor Planet
Section Assistant Coordinator
mapalerts@myfairpoint.net
MAP Alert Homepage
http://home.myfairpoint.net/lgasteroid1/map/
AUDE Web Pages
Gerard Faure (8297 gerardfaure)
http://www.astrosurf.com/map
Greetings MAP Observers:
A
report from Gerard Faure highlights this March MAP alert. John Fletcher's report is also included below with NEO
measurements. I wish to also thank ALBERTO QUIJANO VODNIZA University of Nariño Observatory Pasto,
Nariño. COLOMBIA, for his images of asteroid 2009 DD45 which were featured at spaceweather.com.
Quite a dramatic
show with this fast moving NEA.check the March 2 page at Spaceweather if you missed it.
Gerard writes:
Hi to all
Finally, as I had apparently a future good night during the next week-end,
I decided
to observe during the night of February 27-28,2009 despite many
MAP works in progress.
For
the first time in 2009, I saw 9 asteroids, 1 comet (C/2007 N3 Lulin)
and "my" possible variable star (KISO
C2-97). Therefore, it was impossible to observe faint objects near and over v16, due to a very thin layer of high clouds.
I observed :
(52768) 1988 OR2 v14.3 B/0.2 Amor 3
(1343) Nicole v14.5-14.5
(1237)
Genevieve v14.7-14.8
(1848) Delvaux v14.8-14.8 B/0.2
(2460) Mitlincoln v14.9-14.9 F/0.2 old MAP object
(1109)
Tata v15.0-15.0
(2111) Tselina v15.0-15.0
(4606) Saheki v15.3-15.2 F/0.4-F/0.3 "new"MAP Object
(959)
Arne v15.6-15.5 F/0.5-F/0.4 recent MAP Object
(2460) Mitlincoln was seen for the third opposition.
As the averaged
difference of H magnitude now is very low (about 0.11 magnitude fainter)
with a half-amplitude of
variability equal to 0.07, I put the object "Out
of MAP"
(4606) Saheki has been observed
before the MAP birth by Roger Harvey in
January 1992, at F/0.7 mag. I chosed it to verify this old suspect and
found
a discrepancy of magnitude of F/0.4-F/0.3 mag. Its problem on the H magnitude now is confirmed and I included it in the MAP
Database, with two oppositions already observed. (959) Arne, with a discrepancy of F/0.5-F/0.4, and
recently found as a new
MAP Object by Roger, effectively has a problem of H magnitude. In the past, its H magnitude varied
from 10.7 to 10.2, in the EMP 1998.
Then I put 6 new measures of magnitude in the MAP Database,
up to now
stopped on February 28,2009 with a total of 486 asteroids and 5328
measures. I am on the end of the update
of the MAP Database...
Therefore, I received a mail from John Fletcher who observed on March
01,2009 some NEA, notably the NEA N°(162900)2001 HG31 (Amor 2) and
(14402)1991 DB (Amor 2) which are MAP objects
:
14402 C2009 03 01.93096 12 36 36.03 +06 25 27.5 16.1 V J93
14402 C2009 03 01.93447 12 36 37.31
+06 25 41.0 15.9 V J93
14402 C2009 03 01.93797 12 36 38.42 +06 25 55.4 16.1 V J93
G2900 C2009 03 01.89948 07 09
35.49 +38 30 10.3 16.2 V J93
G2900 C2009 03 01.90299 07 09 36.33 +38 30 06.4 16.3 V J93
G2900 C2009 03 01.90910
07 09 37.69 +38 29 59.1 16.3 V J93 Clear Skies
Lawrence Garrett
ALPO Minor Planet
Section Assistant Coordinator
mapalerts@myfairpoint.net
MAP Alert Homepage
http://home.myfairpoint.net/lgasteroid1/map/
AUDE Web Pages
Gerard Faure (8297 gerardfaure)
http://www.astrosurf.com/map
******************************************************************
MAP ALERT #309, February
15, 2009
Greetings MAP Observers!
Gerard's posting of alert #308 has doubled the work this weekend for this project,
Viva La Gerard! So I pass along my own progress as well as the change over to my new ISP is now complete. To my greatest surprise the MAP webpage came back online yesterday, the only deadline my new
ISP, FairPoint, completed as planned. Our new address is below.
http://home.myfairpoint.net/lgasteroid1/map/
To those who might look, you will see some changes.
As I informed Gerard and Richard Miles, its much easier to maintain a webpage when the site editor really works. You
may recall my font and color comments (complaints) not that long ago. I have changed the font color and size for better
reading online, and have added Gerard last attachment to the attachments page. A few other minor changes to get things started
in a new directions for 2009. I will forward both my new e-mail address and webpage address to the ALPO for the next
journal section report.
Clear Skies
Lawrence
Garrett
ALPO Minor Planet Section Assistant Coordinator
mapalerts@myfairpoint.net
MAP Alert Homepage
http://home.myfairpoint.net/lgasteroid1/map/
AUDE Web Pages
Gerard Faure (8297 gerardfaure)
http://www.astrosurf.com/map
****************************************************************
MAP ALERT #308, February 14, 2009
Hello,
As Lawrence is very busy,I take over from Lawrence to do this new MAP Alert, and may be the next for the future update of
the MAP Database.
At the beginning of February 2009,I made the update of the file containing the comparisons of
the old and new H magnitudes of asteroids from the MPC. In this new file, I put all the asteroids which had a modification
of their H magnitudes since August 2008, in September 2008 then up to January 2009. Only a small part of the MAP asteroids
already are concerned up to now by the changes of the H magnitudes by the MPC.
I join to my email a zipped file.htm
containing the list of all the H changes from September 2008 to January 2009.
As I was also busy, due to my work
of accountant, I had no time up to now to send the file. May be the last pack of the MPC in February 2009 contains new modified
other asteroids, but I shall analyze the eventual new H modifications by the MPC in a coming month.
I did an
important modification in the MAP Database to treate now the
continual modifications of the H magnitudes by the MPC.
I expect to finish soon the MAP Database update.
Good weekend !
Gerard Faure
AUDE Web Pages
Gerard
Faure (8297 gerardfaure)
http://www.astrosurf.com/map
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