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The Radius of Jupiter and Its Polar Haze

✍ Scribed by Anthony Mallama; Bruce A. Krobusek; Donald F. Collins; Peter Nelson; James Park

Publisher: Elsevier Science
Year: 2000
Tongue: English
Weight: 57 KB
Volume: 144
Category: Article
ISSN: 0019-1035
DOI: 10.1006/icar.1999.6276

No coin nor oath required. For personal study only.

✦ Synopsis

CCD photometry of Jupiter's satellite Callisto in eclipse has been fitted to model light curves to determine polar radii of 67,168 ± 50 km (north) and 67,106 ± 62 km (south). These values are about 172 and 110 km, respectively, greater than that computed from Jupiter's equatorial dimension and its hydrostatic figure at the 0.5-mbar eclipse altitude. We attribute the excess radius to attenuation of light by the high haze layer of the polar atmosphere and set an upper limit of detectable haze at about 300 km above the 1-bar pressure level. Nonpolar eclipse results give radii that are in good agreement with the accepted size of Jupiter and do not indicate haze above the eclipse altitude.

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