Solar System Live, an interactive orrery for the Web, lets you view the solar system in a variety of ways for any date between 4713 B.C. and A.D. 8000. An ephemeris can be displayed for any location on Earth and, given orbital elements in the form published in the IAU Circulars, the orbit and position of asteroids and comets can be plotted.
Astronomy Lab 2 generates animated movies that simulate a host of astronomical events (including solar and lunar eclipses, lunar occultations, planetary occultations., transits of Mercury and Venus.. the orbits of Jupiter's bright moons.. and the motions of the planets in the plane of the ecliptic). In addition, Astronomy Lab 2 produces several reports that predict the most important and exciting astronomical events of the present, future and past. Also, Astronomy Lab 2 generates several graphs that illustrate many fundamental astronomical concepts.