Observations of comet 19P/Borrelly by the miniature integrated camera and spectrometer aboard deep space 1

L. A. Soderblom, T. L. Becker, G. Bennett, D. C. Boice, D. T. Britt, R. H. Brown, B. J. Buratti, C. Isbell, B. Giese, T. Hare, M. D. Hicks, E. Howington-Kraus, R. L. Kirk, M. Lee, R. M. Nelson, J. Oberst, T. C. Owen, M. D. Rayman, B. R. Sandel, S. A. SternN. Thomas, R. V. Yelle

Research output: Contribution to journalArticlepeer-review

168 Scopus citations

Abstract

The nucleus of the Jupiter-family comet 19P/Borrelly was closely observed by the Miniature Integrated Camera and Spectrometer aboard the Deep Space 1 spacecraft on 22 September 2001. The 8-kilometer-long body is highly variegated on a scale of 200 meters, exhibiting large albedo variations (0.01 to 0.03) and complex geologic relationships. Short-wavelength infrared spectra (1.3 to 2.6 micrometers) show a slope toward the red and a hot, dry surface (≤345 kelvin, with no trace of water ice or hydrated minerals), consistent with ∼10% or less of the surface actively sublimating. Borrelly's coma exhibits two types of dust features: fans and highly collimated jets. At encounter, the near-nucleus coma was dominated by a prominent dust jet that resolved into at least three smaller jets emanating from a broad basin in the middle of the nucleus. Because the major dust jet remained fixed in orientation, it is evidently aligned near the rotation axis of the nucleus.

Original languageEnglish (US)
Pages (from-to)1087-1091
Number of pages5
JournalScience
Volume296
Issue number5570
DOIs
StatePublished - May 10 2002

ASJC Scopus subject areas

  • General

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