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Occultation evidence for an atmosphere on Pluto (1988)

Hill, K. M. ; Hubbard, W. B. ; Dieters, S. W. ; [et al.]

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Publication Date: 2011-08-19

Description: Observations from different sources of Pluto occulting a 12th-magnitude star indicate an extended atmosphere around the planet. Here, data obtained from the 1 m telescope at the University of Tasmania, Hobart are interpreted in terms of a theory for occultation by an atmosphere whose thickness is comparable to the planetary radius. The data can be satisfactorily fitted with a methane atmosphere at plausible pressures and temperatures. The surface pressures inferred from this single chord are uncertain by an order of magnitude, but are consistent with spectroscopic constraints.

Keywords: LUNAR AND PLANETARY EXPLORATION

Type: Nature (ISSN 0028-0836); 336; 452-454

Format: text

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