Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...236l..19a&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 236, no. 2, Sept. 1990, p. L19, L20.
Astronomy and Astrophysics
Astrophysics
4
Astrometry, Galilean Satellites, Occultation, Charge Coupled Devices, Orbital Mechanics, Satellite Surfaces, Voyager Project
Scientific paper
In 1991 the Galilean satellites of Jupiter will occult and eclipse each other. These events occur every six years. Because of the absence of atmosphere on these satellites they lead to very accurate astrometric observations and are of major interest for dynamical studies. These observations are also an efficient way to study the surface of the satellites. In particular, the infrared observations make it possible to observe Io's hot spots and volcanoes from the earth. For the next 1991 occurrence, a campaign of observation is being organized which will involve collaboration between specialists in astrometry, photometry and planetology. This paper describes the techniques to be used, and presents new data for observations in daylight accessible with infrared techniques.
Arlot Jean-Eudes
Descamps Pascal
Sevre F.
Thuillot William
Vu D. T.
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