Hi Bill,

Thanks.

The MPC did update the uncertainty today after the object was not
found and Sonia sent me another uncertainty plot that is a bit larger
than the one available publicly.
It is possible that the object lies outside the region being
searched, but I'd hate to waste too much of other's precious
telescope time and ask for more.

At CSS we really do appreciate all the effort that goes into the
follow up of our objects. We try to thank everyone who does on our
home page. If anyone gets missed, please let us know.

--
Richard Kowalski
Catalina Sky Survey
Lunar and Planetary Laboratory
University of Arizona
Tucson, AZ 85721
http://www.lpl.arizona.edu/css/




On Jul 1, 2009, at 5:52 PM, Bill J Gray wrote:

> Hi Richard, all,
>
> "... There may be another solution linking the Jun 24 and Jun
> 27 observations from G96."
>
> I don't think there is an alternative solution, but there _are_
> some variant orbits as much as 15' off the nominal position shown
> on NEOCP (which currently shows variants mostly within 4' of the
> nominal position). For example:
>
> Orbital elements:
> 9MA2C3C
> Perihelion 2009 Feb 14.138988 TT = 3:20:08 (JD 2454876.638988)
> Epoch 2009 Jun 24.0 TT = JDT 2455006.5 Earth MOID: 0.0882
> M 159.834 (2000.0) P Q
> n 1.230814 Peri. 205.464 -0.345093 -0.887655
> a 0.862331 Node 265.981 0.904912 -0.228451
> e 0.44335 Incl. 17.798 0.249084 -0.399846
> P 0.80/292.48d H 21.9 G 0.15 q 0.480011 Q 1.244651
> From 10 observations 2009 June 24-27; RMS error 0.675 arcseconds
>
> ...which seems like a slightly wacky orbit. But so are most of
> the
> orbits I've found corresponding to this object (more distant orbits
> tend to have high inclinations). Some comet orbits fit well, too,
> but I'd not read much into that at this point.
>
> Maybe this is just a bit outside the area people have been
> searching?
>
> -- Bill
>
>
> ------------------------------------
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Posts to this list or information found within may be freely used,
> with the stipulation that MPML and the originating author are cited
> as the source of the information.Yahoo! Groups Links
>
>
>