Comet 9P/Tempel 1 During the Deep Impact Encounter

Details Comet 9P/Tempel 1 During the Deep Impact Encounter Comet 9P/Tempel 1 During the Deep Impact Encounter

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop.3658l&link_type=abstract

Spitzer Proposal ID #3658

Computer Science

Scientific paper

On July 4, 2005 NASA's discovery mission Deep Impact (hereafter DI) will send a 375 kg impactor into the nucleus of comet 9P/Tempel 1 at 10.2 km/s relative velocity in order to produce a crater that will reveal sub-surface layers of the nucleus. To maximize the scientific return of the DI mission, we propose to use the Spitzer[f1] Space Telescope to observe the comet before, during, and after the impact. Using the IRS at 5 - 40 um, we will be able to study the composition of the neutral gas coma and the size and composition of the emitted dust. Any changes in the observed properties of the comet after a new equilibrium has been reached will be attributable to the removal of a section of evolved, insolated surface and the exposure of the relatively fresh sub-surface interior of the nucleus.

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