Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975aj.....80..986z&link_type=abstract
Astronomical Journal, vol. 80, Nov. 1975, p. 986-995.
Astronomy and Astrophysics
Astronomy
17
Asteroids, Astronomical Catalogs, Planetary Surfaces, Ubv Spectra, Astronomical Photometry, Chondrites, Color, Tables (Data)
Scientific paper
New photometric observations on the UBV system are presented for 45 asteroids, bringing the total to 91 for which complete UBV colors are available. The reduced magnitudes B (1, 0) scatter about the adopted catalog values by + or - 0m, 25, with negligible systematic difference. The UBV colors fall into three distinct groups which correspond almost perfectly to the S (silicaceous or stony), C (carbonaceous), and U (unclassifiable) asteroid types recently identified from polarimetry, infrared radiometry, and narrow-band spectrophotometry. It becomes possible to classify asteroids from UBV observations alone. The S asteroids have colors very similar to those of L and LL ordinary chondrites, and some of the U objects are consistent in color with nickel-iron or enstatite-rich meteorites, but no meteorites appear to have the UBV colors of the C asteroids. The asteroid C and S compositional types have no exact counterparts among the surfaces of natural satellites.
Andersson L.-L.
Bowell Edward
Wisniewski Weislaw Z.
Zellner Ben
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