"Astrometrica" Online
The "Astrometrica" Homepage provides some information on the software and it's author, and includes links to related web pages. You will also find a User Information Page that gives information on current developments, updates, and bug reports.
Make sure your modem or network is connected to the Internet, and select one of these sites:
You may also want to check out the Guide to Minor Body Astrometry provided by the IAU Minor Planet Center.
Many Thanks to Ikufumi Makino and Wolfgang Stroh for administrating the "Astrometrica" Web Pages!