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Detection of ice and organics on an asteroidal surface

Author

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  • Andrew S. Rivkin

    (Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland 20723, USA)

  • Joshua P. Emery

    (University of Tennessee, Knoxville, Tennessee 37996, USA)

Abstract

Ice on asteroid 24 Themis Two groups, both using the NASA Infrared Telescope Facility (IRTF) on Mauna Kea in Hawaii but independently, have obtained infrared spectra of the main-belt asteroid 24 Themis consistent with the widespread presence of a frosty coating containing water ice and organics. Although the presence of water on the surface of some asteroids had been inferred from the comet-like activity of several small asteroids, these are the first actual measurements of water and organics in the asteroid belt. The presence of surface ice is particularly surprising because of the relatively short lifetime that exposed ice has at this distance from the Sun — between the orbits of Mars and Jupiter.

Suggested Citation

  • Andrew S. Rivkin & Joshua P. Emery, 2010. "Detection of ice and organics on an asteroidal surface," Nature, Nature, vol. 464(7293), pages 1322-1323, April.
    • Handle: RePEc:nat:nature:v:464:y:2010:i:7293:d:10.1038_nature09028
    DOI: 10.1038/nature09028
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