The Unusual Spectra of 15 Near-Earth Asteroids and Extinct Comet Candidates

Michael D. Hicks, Uwe - Fink, William M. Grundy

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

We present moderate resolution reflectance spectra from 0.55 to 1.0 μm for 15 near-Earth asteroids and extinct cometary nuclei candidates obtained at the Catalina Station 1.54-m telescope near Tucson, Arizona. Though our limited wavelength coverage often makes firm classification difficult, an analysis of our measurements reveals that there is an over-representation of asteroids with unusually deep 0.9- to 1-μm absorption features. Several of our objects have spectra consistent with Q-type asteroids and within the limits of our signal-to-noise ratio, are compatible with a chondritic composition. It is apparent that the near-Earth asteroids as a population have an unusual taxonomic distribution, one that is much closer to that of meteoritic falls than may have been previously assumed.

Original languageEnglish (US)
Pages (from-to)69-78
Number of pages10
JournalIcarus
Volume133
Issue number1
DOIs
StatePublished - May 1998

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asteroids
comets
asteroid
comet
signal-to-noise ratio
reflectance
signal to noise ratios
stations
telescopes
wavelength
nuclei
wavelengths

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

The Unusual Spectra of 15 Near-Earth Asteroids and Extinct Comet Candidates. / Hicks, Michael D.; Fink, Uwe -; Grundy, William M.

In: Icarus, Vol. 133, No. 1, 05.1998, p. 69-78.

Research output: Contribution to journalArticle

Hicks, Michael D. ; Fink, Uwe - ; Grundy, William M. / The Unusual Spectra of 15 Near-Earth Asteroids and Extinct Comet Candidates. In: Icarus. 1998 ; Vol. 133, No. 1. pp. 69-78.
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