Dr. Clay sherrod at arksky.org Arkansas sky observatory publishes ephemeris for comets etc. Generally I guess you can poke in the ra/Dec to point the mount. The rates won't be right though. Perhaps PhD will guide you along. Somewhere Jerry made a post about this. SkySafari has these things and I wonder if it would drive the mount. If I have time I will give it a go. Same with satellites. I wonder.
Wes, Southport NC
PMC-8, ES ED 127, 10" LX200GPS, Astro-Tech 8" Newt, ETX-90
Polemaster, Orion ST-80 and SAG
Electrical Engineer, Retired