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The albedo and diameter of 1862 Apollo |
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| Authors: | LA Lebofsky GJ Veeder GH Rieke MJ Lebofsky DL Matson C Kowal CG Wynn-Williams EE Becklin |
| Institution: | 1. Lunar and Planetary Laboratory, University of Arizona, Tucson, Arizona 85721, USA;2. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109, USA;3. Steward Observatory, University of Arizona, USA;4. Palomar Observatory, California Institute of Technology, USA |
| Abstract: | We report infrared thermal emission measurements of 1862 Apollo, which is the type example of an Earth-crossing asteroid. We derive a geometric albedo of 0.21 ± 0.02 which is within the albedo range of the S class of asteroids. The effective diameter was observed to vary with rotation from 1.2 ± 0.1 to 1.5 ± 0.1 km. |
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