Diviner Lunar Radiometer observations of the LCROSS impact.
Science
; 330(6003): 477-9, 2010 Oct 22.
Article
em En
| MEDLINE
| ID: mdl-20966245
ABSTRACT
The Lunar Reconnaissance Orbiter (LRO) Diviner instrument detected a thermal emission signature 90 seconds after the Lunar Crater Observation and Sensing Satellite (LCROSS) Centaur impact and on two subsequent orbits. The impact heated a region of 30 to 200 square meters to at least 950 kelvin, providing a sustained heat source for the sublimation of up to ~300 kilograms of water ice during the 4 minutes of LCROSS post-impact observations. Diviner visible observations constrain the mass of the sunlit ejecta column to be ~10(-6) to 10(-5) kilograms per square meter, which is consistent with LCROSS estimates used to derive the relative abundance of the ice within the regolith.
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MEDLINE
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Lua
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En
Ano de publicação:
2010
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Article