The Nucleus of Deep Impact Target Comet 9P/Tempel 1


On UT 2000 August 21 we obtained simultaneous visible and mid-infrared observations of comet 9P/Tempel 1, the target of the upcoming NASA Discovery Program mission Deep Impact. The comet was still quite active while 2.55 AU from the Sun (post-perihelion). Two independent analyses of our data, one parameterizing the coma morphology and the other modeling… (More)


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