Occultation evidence for an atmosphere on Pluto

William B. Hubbard, D. M. Hunten, S. W. Dieters, K. M. Hill, R. D. Watson

Research output: Contribution to journalArticle

84 Scopus citations

Abstract

On 9 June 1988, Pluto occulted a 12th magnitude star1. Several observations of the occultation were obtained from Australia, New Zealand, and the south Pacific2 and indicated that the initial decline in stellar flux was gradual, as would be expected if the starlight was defocused by an extended atmosphere around the planet. Here we interpret data obtained from the 1- telescope at the University of Tasmania, Hobart, 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.

Original languageEnglish (US)
Pages (from-to)452-454
Number of pages3
JournalNature
Volume336
Issue number6198
DOIs
StatePublished - Jan 1 1988

ASJC Scopus subject areas

  • General

Fingerprint Dive into the research topics of 'Occultation evidence for an atmosphere on Pluto'. Together they form a unique fingerprint.

  • Cite this

    Hubbard, W. B., Hunten, D. M., Dieters, S. W., Hill, K. M., & Watson, R. D. (1988). Occultation evidence for an atmosphere on Pluto. Nature, 336(6198), 452-454. https://doi.org/10.1038/336452a0