Galileo and Cassini at Jupiter

Details Galileo and Cassini at Jupiter Galileo and Cassini at Jupiter

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000dps....32.6543b&link_type=abstract

American Astronomical Society, DPS Meeting #32, #65.43; Bulletin of the American Astronomical Society, Vol. 32, p.1648

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Scientific paper

Galileo's 29th orbit of Jupiter coincides with the period of time that the Cassini spacecraft will be making Jupiter system observations during its flyby on the way to Saturn. Galileo science objectives for this period include coordinated studies of the system, specific targeted events, and Galileo's first detailed study of Ganymede in eclipse. Systematic study of the dusk region of the Jovian magnetosphere has already begun, as Galileo exited the magnetosphere after the Ganymede 28 encounter and entered the solar wind for the first time since 1996. It will re-enter the magnetosphere as Cassini approaches in the Fall of 2000 and be near periapsis with Jupiter at the time of Cassini closest approach. Combining information from both Galileo and Cassini will allow a detailed study of the effects of the solar wind on the magnetosphere for the first time. In addition, the changing geometry of the two spacecraft creates opportunities for coordinated observations of specific phenomena. One example is the measurement of Jupiter dust stream particles with the dust investigations on both spacecraft. Another is observation of an Io eclipse from two different viewpoints and with complementary wavelengths, time and spatial resolution. Finally, the Ganymede 29 encounter will be a unique one, since Ganymede is in Jupiter's shadow at the time of closest approach. Observations will include attempts to determine the geometry of auroral emissions and their relation to Ganymede's magnetosphere and its interaction with Jupiter's environment. This work was supported under NASA's contract with Caltech/Jet Propulsion Laboratory.

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