Hi all, 2009 HC82 is apparently the first known Apollo object with a retrograde orbit. Quite a big rock (2-3 km). There was already an Amor type object in that...
21812
Brian Skiff
bas@...
May 1, 2009 9:51 pm
... Name a e i q 1999 XS35 17.9 0.95 19.4 0.95 2005 VD 6.67 0.25 172.8 0.30 2007 VA85 3.9 0.72 132.6 1.09 ...
Hi Jean-Claude, This may yet turn out to be something more comet-like. The orbit below (and some intermediate ones) fit reasonably well. Further observations...
21814
Brian Skiff
bas@...
May 2, 2009 4:46 am
Prompted by the announcement of 2009 HC82 and a prod from Tony Beresford, I have updated my list of "Damocloids". Rough elements from the JPL Horizons site...
21815
Jean-Claude MERLIN
jcmerlin@...
May 2, 2009 12:29 pm
Hi Bill and Brian, OK, thanks. Probably "extinct" comet nuclei effectively. I didn't know that the retrograde inclination was a criterion for the Damocloid...
Watching Space Rocks: Live Chat and the recorded video with Steve Chesley on USTREAM http://bit.ly/EYNeW Picked up the story on Twitter C. Bell H47 ...
Hi there, I'm curious to know if there is software available to post-process a sequence of images (or a procedure that people follow with standard software...
Folks, ... In the past few days I ran across several objects which our moving object detection software suggested to be possibly new but which seem to be...
Hi Reiner, I just checked (181559), fitting 65 observations taken from the AstDys database, and propagating the orbit to your observations. Your observations...
I had a problem a couple of months ago with a bright NEO. Something must have gotten messed up with MPCORB.dat. Astrometrica detected it as a moving object but...
Charles, ... Astrometrica is *not* calculating *perturbed* ephemerides, so you will almost never see a NEO plotted on the right location on the images inside...
21823
Andrea Milani
milani@...
May 4, 2009 12:50 pm
Of course you can get an observation prediction for whatever numbered asteroid (and multiopposition asteroid) from AstDyS http://hamilton.dm.unipi.it/astdys/ ...
Sorry, I forgot. ... That happens when the MPC/MPCORB is jumping to the next standard epoch. If that one is closer to the epoch of your images then suddenly ...
... Thanks Andrea for pointing this out. I tried it. Beautiful! Aldo Aldo Vitagliano Dip. di Chimica, Universita' di Napoli Complesso Universitario di M.S....
21826
Robert McNaught
rmn@...
May 5, 2009 7:07 am
This object could get up to around 900"/hr in around 12 hours. The uncertainty is still fairly low in the next few hours for a wide-field scope and I plan to...
21827
Robert McNaught
rmn@...
May 5, 2009 1:03 pm
Found it a couple of degrees ahead of nominal. The NEOCP now has the updated orbit. Cheers, Rob ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Robert H....
21828
Michael Schwartz
mbs@...
May 11, 2009 11:57 pm
Greetings, I just wanted the group to know that we have implemented non-sidereal tracking on the 32" & 16" in Arizona, and the 14" in W. Australia. Interested...
Dear All, I want to point out to you the virtual impactor 2007 RY19. At present it has a moderately high Palermo scale value of -3.81, being the 12th in the...
21830
Robert McNaught
rmn@...
May 12, 2009 10:10 am
Fabrizio, Is there a prediction for an impacting variant orbit? Folks who might not have time to search the whole uncertainty region might be able to search...
... Hi Rob, as you can see from the NEODyS impact table (IT) for 2007 RY19, there are more than 30 virtual impactors (VI) from 2024 until 2090. It is ...
With the use of the OrbFit 4.0 software it is possible to predict position of asteroid 2007RY19 in the sky. There are orbital elements of 10 clones of asteroid...
Hello all, The Herschel and Planck missions are scheduled to be launched (on the same rocket, separating sometime after launch) on 14 May sometime before...
... My message overnight on this topic doesn't seem to have been posted. It pointed out that you can very easily get ephemerides from variant orbits from the...
... You can easily generate ephemerides for variant orbits using the MPC's MPES. The uncertainty information for 2007 RY19 is being generated from 41 variant...
21836
Ron Baalke
baalke@...
May 14, 2009 12:46 am
http://www.jpl.nasa.gov/news/news.cfm?release=2009-083 Spitzer Catches Star Cooking Up Comet Crystals Jet Propulsion Laboatory May 13, 2009 Scientists have...
... Hmm. My missing message from last night has now appeared. Strange... I just checked /iau/WhatsNew.html and see that the MPC has further enhanced the MPES...
Good afternoon Claudio You pose a very good question. Most of us will most likely consider your question and place it in the context of our favorite science ...
... There are indeed three bright objects moving in a triangle pattern on parallel tracks. Do you (Bill, Gareth) mind if I report them with temporary...
Hi Reiner, Glad you got some data! Yes, we should be able to ID them all without much trouble. Richard Miles at (E10) and Peter Birtwhistle at (J95) got...
