Linkit

• Yahoo: Science > Astronomy > Software
• Yahoo: Science > Astronomy > Astronomical Calendars
• dmoz: Science: Astronomy: Software
• Google: Science > Astronomy > Software
• Paul Schlyter: How to compute planetary positions
• Paul Schlyter: Computing planetary positions - a tutorial with worked examples
• Paul Schlyter: How to compute rise/set times and altitude above horizon
• Keith Burnett: approximate astronomical positions
• Project Pluton sivut, mm. kalentereista, tietokannoista ja ohjelmoinnista
• >a href="http://en.tldp.org/HOWTO/Astronomy-HOWTO/">Linux Astronomy HOWTO
• Ohjelmistojen kotisivuja