--- In guide-user@yahoogroups.com, Bill J Gray <pluto@p...> wrote:

>
> Hi Mike,
>
> I will second Maciej's suggestion about use of MPCORB. There is
> more information about MPCORB (where to get it, how to use it in

Guide,

> its advantages and drawbacks) at
>
> http://www.projectpluto.com/mpcorb.htm
>
> -- Bill
>

I downloaded the file but am not sure where to put it. To update
comets and unusual objects I update or paste the new cordinates to the
soft02cmt text doc and it auto adds new objects. The "use mpcorb" is
not active in the extras drop down . I guess you have guessed I don't
know much about these things. Mike