Planetary Conjunctions:

The following were calculated with various incarnations of my conjunction program.

These are geocentric conjunctions (run on a UNIX system in 2003).

These are geocentric conjunctions in celestial longitude (VAX version run around 1994).

These are three-planet conjunctions when the planets fit in the smallest circle.

Additional information is found in "Mutual Occultations of Planets: 1557-2230", Sky and Telescope, March 1979.

Planetary Phenomena:

Here are some planetary phenomena for the present decade.