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Latitude measures of Jupiter in the 0.89 micron methane bandJupiter has been photographed by the Lunar and Planetary Laboratory in the 0.89 micron methane band since October 1968. A photometric evaluation of these photographs has not yet been carried out, but a visual study of this collection and a comparison with the color records has been made. This comparison, together with diameter and latitude measures of the methane records, shows that the albedos and latitudes of most features shown in 0.89 micron vary with time and the albedos and latitudes of most features shown in 0.89 micron vary with time and that there is no simple correlation between the visual color and/or intensity of a feature and its intensity in the methane band. The latitudes of the Red Spot and South Tropical Zone have remained unchanged, while those of the Equatorial Zone, North Tropical Zone, and South Polar Hood have changed. Measures of images taken near opposition show the polar diameter to be within 0.5% of the American Ephemeris Value, but the equatorial diameter as 1.3% smaller. Measures near quadrature suggest a phase defect 3.5 times greater in value than the American Ephemeris value. The large phase defect and bright South Polar Hood contribute to the circular appearance of Jupiter in methane. Latitude variations of the North edge of the South Polar Hood support the 1964 Munch and Younkin hypothesis that this feature is composed of frozen methane.
Document ID
19740019210
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Minton, R. B.
(Arizona Univ. Tucson, AZ, United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1973
Publication Information
Publication: Commun. of the Lunar and Planetary Lab.: Commun. Nos. 173-183, Vol. 9, Part 5
Subject Category
Space Sciences
Accession Number
74N27323
Funding Number(s)
CONTRACT_GRANT: NGL-03-002-002
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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