Notes from someone's school project (determining orbit of Hale Bopp from their own observations):
http://wsx.lanl.gov/WebPub/scifair_comet.pdf
Ricci's astronomy software might have something:
http://www.pierpaoloricci.it/downloa...ftware_eng.htm
Some history:
http://www-groups.dcs.st-and.ac.uk/~...cs/Orbits.html
History on Ceres orbit determination:
http://american_almanac.tripod.com/ceres.htm
An astronomical almanac is needed if you are looking for the book-angle i.e. library, as you need to know where the Sun is fairly accurately. You can either work it out or look it up.
Enjoy.