A few days ago I did astrometry of a non-identified body (below). Yesterday 2008-01-31 I tried to followup and it wasn't at the nominal position predicted by...
Hello all, Personally I don't understand the question. It is similar to "what is the speed of a 1 ton car". Earth orbital speed does not mean much too. Speed...
For those who have not had enough of 2007 TU24 yet, here's a short "movie" I assembled for SB which has TU24 stationary and the background stars moving: ...
Here is a 52-frame animation (2 sec exposure each frame) of the January 28 flyby of near-Earth asteroid 2007 TU24. The 13th magnitude galaxy in the center is...
I finally managed to get a decent run at 2007 TU24 last night and have made a movie from the 304x20s frames obtained over a couple of hours. During the movie...
Bulkmail
bulkmail@...
Feb 2, 2008 9:12 am
20432
... Wow..... congratulations Andrea, Now we are really getting on to interior asteroids that are hardly even "near-Earth". Cheers, Alan ...
It looks to be resonant 3/2 with Mercury or 3/5 with Venus ? JCM ... From: Alan W Harris To: mpml@yahoogroups.com Sent: Saturday, February 02, 2008 9:22 PM ...
Jean-Claude Merlin
jcmerlin@...
Feb 2, 2008 9:25 pm
20434
... Way too early to look at resonances. The observations are compatible with an Amor orbit having a perihelion of 1.02 AU (though admittedly unlikely,...
Dave Tholen
tholen@...
Feb 3, 2008 12:38 am
20435
MPE 2008-C12, of February 2, announded the discovery of an object that received the designation 2008 CM and having an extraordinary orbit, with a revolution...
Jean Meeus
JMeeus@...
Feb 4, 2008 8:18 am
20436
Thanks for that note. I realized after my earlier post that the 17-hour arc was likely insufficient for a definitive orbit. This region around 60-90 deg....
... I will say, however, that this is zone is especially good just from the observer-at-the-telescope viewpoint, since the daily motions of asteroids are quite...
Brian Skiff
bas@...
Feb 4, 2008 7:54 pm
20438
Am getting back into asteroid searching (from New Zealand) after several years hiatus. What is the best telescope up to 20" and camera available for this...
As you probably noticed, this asteroid is passing very close to us in a few hours, assuming that the orbit is good enough. Is there any chance that it is a man...
... Not likely, the Earth encounter velocity (which would have been the Earth escape velocity (v_infinity) if it came from the Earth is very high, around 13.5...
... Still too early to quote a semimajor axis to 0.0001 AU. The observations can be satisfied with semimajor axes anywhere from 1.32 to 2.09 AU. The ...
Dave Tholen
tholen@...
Feb 5, 2008 12:40 am
20442
It just goes to say that before saying anything about the 6 orbital elements of a given object, one should always look at the element number 0, i.e. the length...
... This star is somewhat fainter than this. The TASS MkIV data shows V = 11.94 +/- 0.04. The Carlsberg meridian circle catalogue gives Sloan r' = 11.74....
Brian Skiff
bas@...
Feb 6, 2008 7:25 am
20446
The new observations from code 448 on Feb 6 have refined the orbit to the point where the semimajor axis now lies between 1.48 and 1.60 AU. Perihelion distance...
Dave Tholen
tholen@...
Feb 7, 2008 9:23 am
20447
Is there an "official" light curve convention? I ask because while most light curves I see have "bright" at the top and "dim" at the bottom (so an ascending...
Patrick, Bright at top, dim at bottom. Clear Skies, Brian D. Warner Palmer Divide Observatory/Space Science Institute http://www.MinorPlanetObserver.com ...
I don't believe I have ever seen a plot of an astronomical magnitude scale in a textbook or other authoritative source other than with "bright at top, and dim...
Perhaps we don't want to call too much attention to this.....if the IAU gets wind of it, someone will propose to change it all around, i.e., planets with north...
... Perhaps we don't want to call too much attention to this.....if the IAU gets wind of it, someone will propose to change it all around, i.e., planets with...
I will have to keep quiet and polite while replying to this message. From what I read, Patrick Wiggins just asked what the convention, if any, was. Then you...
It was in HUMOR Alain.....get it? There was no offense given and I don't think that anyone has taken it that way. No one has insulted the IAU.....sometimes a...
Humour is an interesting topic. The majority of humour is based on linguistic double-entendres, and/or local cultural traits. For some 15 years I regularly...
I saw on television several films of near earth asteroids. They shot, trailing smoke, across the sky. They were in the upper atmosphere. They never hit our...
