Hi Michael,
The MPC update their 'unusual' list monthly so that will be more
accurate (assuming you have the most recent softunusual.txt file).
You
can get the most up to date elements (in GUIDE format), for any minor
planet at the Minor Planet Ephemeris Service:
http://cfa-www.harvard.edu/iau/MPEph/MPEph.html
Regards Matt



--- In guide-user@egroups.com, "Michael Mattiazzo" <mmatti@y...>
wrote:

> Hello all,
>
> In August 2000, the near Earth asteroid Mithra 4486 will make a

very
close

> approach to Earth at 0.047AU (7 million km) on the Aug 13th, deep

in
the

> southern skies at 11th magnitude (sorry northerners).
> My problem is that I have 2 Mithra's on screen.
> One from the MPC soft02unusual.txt file with the epoch of elements

at 13 Sep

> 2000 and the other one inbuilt into Guide 7 with epoch of elements

at 25

> July 2000.
> Which is the more accurate set of elements?
>
> Cheers,
> Michael Mattiazzo,
> Wallaroo, South Australia
> mmatti@y...