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Asteroids - Spectral reflectance and color characteristicsWe present visible and near-infrared spectral reflectance curves for 35 asteroids, making a total sample of 67 including our previous work. Several previously unknown spectral types have been discovered. Absorption bands and other features, from which information about the surface composition of the asteroids can be derived, continue to appear. Sampling statistics suggest we have observed about half of the significantly different mineralogical assemblages present in the asteroid belt. There is a general, but imperfect, correlation between spectral type and semimajor axis, which is consistent with the hypothesis that meteorites are derived from the asteroid belt. The color-frequency histogram for the 67 objects is bimodal, probably associated with 'stony' objects and 'carbonaceous' objects. Hirayama family pairs usually show disparate spectral types. 19 Fortuna may show strikingly different photometric properties on opposite sides.
Document ID
19750036803
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Mccord, T. B.
Chapman, C. R.
Date Acquired
August 8, 2013
Publication Date
January 15, 1975
Publication Information
Publication: Astrophysical Journal
Volume: 195
Subject Category
Lunar And Planetary Exploration
Accession Number
75A20875
Funding Number(s)
CONTRACT_GRANT: NGR-22-009-583
CONTRACT_GRANT: NASW-2522
CONTRACT_GRANT: NASW-2521
Distribution Limits
Public
Copyright
Other

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