Kevin Fetter wrote: > As I look for satellites who have the same inclination and ascending node, > to predicte when two satellites will be close to each other, is there any > programs that will sort orbitel elements by ascending node, are can someone > help me program a simple program that will sort the elements by ascending > node. ELEMAN, available from the VSOHP, sorts by those, and other parameters. Reminder: Would everyone please vote on creating a satellite observing newsgroup. To vote, please obtain an official ballot (called a 'CFV') from one of these newsgroups: news.announce.newgroups, news.groups, sci.astro, sci.astro.amateur, sci.astro.planetarium, sci.space.policy or sci.space.shuttle or, you can request a ballot by e-mail from David Bostwick <bostwick@cas.chemistry.gatech.edu> and ask for the sci.astro.satellites.visual-observe ballot. ----------------------- Regards, Jay Respler -- JRespler@surfnj.net Satellite Tracker * Early Typewriter Collector Freehold, New Jersey