Compositional variation on the surface of Centaur 8405 Asbolus

S. D. Kern, Donald W Mccarthy, M. W. Buie, Robert H. Brown, H. Campins, Marcia J Rieke

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Near-infrared 1-2 μm spectra of the Centaur 8405 Asbolus (1995 GO) have been obtained using the Hubble Space Telescope near-infrared camera and multiobject spectrometer. Strong and variable absorption features indicate a significantly inhomogeneous surface characterized by water ice mixed with additional unknown constituents. Over a 1.7 hr interval, the observed spectra varied from a nearly featureless spectrum to a very complicated absorption spectrum, and the integrated flux varied in a manner consistent with previous light-curve observations. The accepted rotation period of 8.9351 hr assumes a shape-dominated light curve. Our observations indicate that the light curve may in fact be dominated by a relatively bright spot with a period of 4.47 hr, i.e., half the previous value.

Original languageEnglish (US)
JournalAstrophysical Journal
Volume542
Issue number2 PART 2
StatePublished - Oct 20 2000

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light curve
near infrared
absorption spectrum
Hubble Space Telescope
ice
spectrometer
cameras
spectrometers
intervals
absorption spectra
water

Keywords

  • Infrared: solar system
  • Kuiper Belt
  • Oort Cloud

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Compositional variation on the surface of Centaur 8405 Asbolus. / Kern, S. D.; Mccarthy, Donald W; Buie, M. W.; Brown, Robert H.; Campins, H.; Rieke, Marcia J.

In: Astrophysical Journal, Vol. 542, No. 2 PART 2, 20.10.2000.

Research output: Contribution to journalArticle

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AU - Rieke, Marcia J

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