Galilean Satellite Eclipse Timings: The 1997/98 Apparition

Details Galilean Satellite Eclipse Timings: The 1997/98 Apparition Galilean Satellite Eclipse Timings: The 1997/98 Apparition

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008jalpo..50d..37w&link_type=abstract

Journal of the Association of Lunar & Planetary Observers, The Strolling Astronomer (ISSN 0039-2502), Vol. 50, No. 4, p. 37 - 46

Astronomy and Astrophysics

Astronomy

Galilean Satellites, Eclipse Timings, Io, Europa, Ganymede, Callisto

Scientific paper

The Galilean Satellite Eclipse Timing Program of the ALPO Jupiter Section received 430 visual timings of eclipses of Io, Europa, Ganymede and Callisto from 36 observers for the 1997/98 Apparition. For each satellite, eclipse visual disappearance and reappearance timings were adjusted for telescope aperture and were then compared with the Jet Propulsion Laboratory's "E-2" Ephemeris. Of the four satellites, only Europa differed significantly in position from the E-2 Ephemeris, being about 29 seconds (390km) ahead of, or earlier relative to, its predicted position.

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