The diameter and thermal inertia of 433 Eros |
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| Authors: | David Morrison |
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| Institution: | 1. Institute for Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA;2. Lunar and Planetary Laboratory, University of Arizona, Tucson, Arizona 85721, USA |
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| Abstract: | Radiometry of Eros at 10 and 20 μm demonstrates that the thermal conductivity of the upper centimeter of the surface is approximately as low as that of the Moon, suggesting that the asteroid has a regolith of highly porous rocky material. When combined with photoelectric photometry, these infrared measurements yield an effective diameter of Eros at maximum light of D0 = 22 ± 2 km and a geometric albedo of pv = 0.18 ± 0.03. |
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