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UBV photometry of asteroid 433 ErosUBV observations of asteroid 433 Eros were conducted on 17 nights during the winter of 1974/75. The peak-to-peak amplitude of the light curve varied from about 0.3 mag to nearly 1.4 mag. The absolute V magnitude, extrapolated to zero phase, is 10.85. Phase coefficients of 0.0245 mag/degree, 0.0009 mag/degree, and 0.0004 mag/degree were derived for V, B-V, and U-B, respectively. The zero-phase color of Eros (B-V = 0.88, U-B = 0.50) is representative of an S (silicaceous) compositional type asteroid. The color does not vary with rotation. The photometric behavior of Eros can be modeled by a cylinder with rounded ends having an axial ratio of about 2.3:1.
Document ID
19750021890
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Millis, R. L. (Lowell Observatory Flagstaff, AZ, United States)
Bowell, E. (Lowell Observatory Flagstaff, AZ, United States)
Thompson, D. T. (Lowell Observatory Flagstaff, AZ, United States)
Date Acquired
September 3, 2013
Publication Date
August 18, 1975
Subject Category
Astronomy
Report/Patent Number
NASA-CR-143316
Accession Number
75N29963
Funding Number(s)
CONTRACT_GRANT: NGR-03-003-001
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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