I just uploaded a file suitable for v 2.76 to the group files. I used the MPES
(Minor Planet Ephemeris Service, which is not the same as MPEC- Minor Planet
Electronmic Circulars)
<http://cfa-www.harvard.edu/iau/MPEph/MPEph.html>
to find the MPC's estimated magnitude for the fragments, and to get the orbital
elements (in "TheSky" format, which CdC also uses). Then I used Patrick's
suggestion of changing G and H to 12 and 6 for the main component, and then
adjusted G and H for the other fragments according to the MPES ephemeris
estimated magnitude relative to the main component.
With this data, CdC gives a magnitude 0.8 brighter than the MPES estimate for
most of the fragments, and 0.5 brighter for a few. This may be due to the
difference between "total magnitude", and "nucleus magnitude". I think the
MPES gave nucleus magnitude.
-John
--- Patrick Chevalley <[EMAIL PROTECTED]> wrote:
> I have put the data for 19 fragments here:
> http://www.ap-i.net/skychart/data/COMET-73P.DAT
>
> This is in MPC format for the beta Cartes du Ciel version 3 (
> http://www.ap-i.net/skychart ), this not work without modification with CdC
> V2.76.
> After loading the file be sure to adjust the comet magnitude limit to go to
> magnitude 22.
>
> Here is a screenshot how it look:
> http://www.ap-i.net/skychart/data/73p.png
> Nice procession :-)
>
> Source is MPEC 2006-G24 and 2006-G28, approximate magnitudes from the
> observations.
> 73P-C is the main component as show with the standard file.
>
> Good observation!
> Patrick
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
>
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