Jupiter And Family Credit: Galileo Project, Voyager Project, JPL, NASA

Anthony Mallama CCD photometry of Jupiter's Galilean satellite eclipses was begun in 1990. The observations have resulted in accurate, up-to-date timings for these phenomena, and observed minus calculated (O - C) values for the four satellite ephemerides: Io, Europa, Ganymede, and Callisto. The timings are summarized in a text file of observed eclipses. This line of research has also been used to measure Jupiter's radius and polar flattening, detect aerosols in the planet's atmosphere from the crash of comet Shoemaker-Levy 9, improve the Galilean satellite ephemerides, and help locate the positions of volcanoes on Io. More details can be found in our journal publications. The principal observers have been Bruce Krobusek (Farmington, New York), Peter Nelson and Jim Park (Ellinbank Observatory, Australia), and Don Collins (Warren Wilson College, North Carolina). Link to an mpg movie of Jupiter's satellite Ganymede emerging from eclipse (130k .mpg file). Europa is also visible in the frame. Link to my Lunar Eclipse home page. Link to Bob Howell's International Jupiter Watch Satellite Discipline home page. Link to Mark Showalter's Jupiter Viewer. Link to J.-E. Arlot's Bureau des Longitudes About me.

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