Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977icar...31..447z&link_type=abstract
Icarus, vol. 31, Aug. 1977, p. 447-455. NASA-supported research.
Astronomy and Astrophysics
Astronomy
11
Asteroids, Astronomical Photometry, Ubv Spectra, Planetary Composition, Ultraviolet Photometry
Scientific paper
Photoelectric magnitudes and colors on the ultraviolet (UBV) system are presented for 65 minor planets, including four Mars crossers, six Trojans, and main-belt objects down to 6 km in diameter. The Trojans all have very similar colors not characteristic of the main-belt population. A paucity of S-type asteroids at the smallest diameters, predicted from trends seen at larger sizes, is not observed. The newly available color data for small objects ranging from 1.0 to 5.2 astronomic units in heliocentric distance show the main belt to be a transition zone between predominantly silicate and carbonaceous compositions.
Andersson L.-L.
Gradie Jonathan
Zellner Ben
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