Spectrophotometry (0.33 to 1.07 μm) of 433 Eros and compositional implications |
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Authors: | Carle Pieters Michael J. Gaffey Clark R. Chapman Thomas B. McCord |
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Affiliation: | 1. Remote Sensing Laboratory, Department of Earth and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA;2. Planetary Science Institute, 2030 East Speedway, Tucson, Arizona 85719, USA |
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Abstract: | The spectral reflectance (0.33–1.07 μm) for the asteroid 433 Eros was determined as a function of rotational phase during January 28–30, and February 15, 1975. Interpretation of absorption features suggests Eros is composed of an undifferentiated assemblange of moderate to high temperature minerals (iron, pyroxene, and olivine, but no carbon). H-type ordinary chondrites are such assemblages, but it would be premature to conclude that Eros is like an H chondrite meteorite in composition until a better understanding is reached of possible physical differences between laboratory powders and asteroid regoliths for metal-bearing assemblages. There are no large-scale major compositional variations on the different sides of Eros. |
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