1)   Planet's Orbits 1.7.0
Planet's Orbits (for Windows 98/ME/2000/XP) is an accurate digital orrery with a wealth of functionality. The program uses the DE404 ephemeris (accurate for dates between 2000 B.C. and 6000 AD) for the calculation of planetary (except Pluto).
orrery, planets, asteroids, planetary positions, solar system, astronomy, satellites, ephemeris,

 2)   Tracking Earth Satellites 1
The Use of Videography in Tracking Earth Satellites.Scattered around the world is a network of about sixteen amateur observers who spend most of their spare time looking at earth satellites.They concentrate on tracking classified military satellites.
Tracking, Earth, Satellites,