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P/2006 HR30 (siding spring) : a low-activity comet in near-Earth space

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dc.contributor.author Hicks, Michael D.
dc.contributor.author Bauer, James M.
dc.date.accessioned 2008-08-21T22:57:36Z
dc.date.available 2008-08-21T22:57:36Z
dc.date.issued 2007-06-10
dc.identifier.citation The Astrophysical Journal Letters, 662: L47–L50, 2007 June 10 en_US
dc.identifier.clearanceno 07-0938
dc.identifier.uri http://hdl.handle.net/2014/40934
dc.description.abstract The low cometary activity of P/2006 HR30 (Siding Spring) allowed a unique opportunity to study the nucleus of a periodic comet while near perihelion. P/2006 HR30 was originally targeted as a potential extinct comet, and we measured spectral reflectance and dust production using long-slit CCD spectroscopy and wide-field imaging obtained at the Palomar Mountain 200 inch telescope on 2006 August 3 and 4. The dust production Afp = 19.7±0.4 cm and mass-loss rateQ dust 4.1±0.1 kg sֿ1¹ of the comet were approximately 2 orders of magnitude dust less than 1P/Halley at similar heliocentric distance. The VRI colors derived from the spectral reflectance were compared to Kuiper Belt objects, Centaurs, and other cometary nuclei. We found that the spectrum of P/2006 HR30 was consistent with other comets. However, the outer solar system bodies have a color distribution statistically distinct from cometary nuclei. It is our conjecture that cometary activity, most likely the reaccretion of ejected cometary dust, tends to moderate and mute the visible colors of the surface of cometary nuclei. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher The American Astronomical Society en_US
dc.subject comets en_US
dc.subject Kuiper Belt en_US
dc.subject minor planets en_US
dc.subject asteroids en_US
dc.subject solar system en_US
dc.subject formation
dc.title P/2006 HR30 (siding spring) : a low-activity comet in near-Earth space en_US
dc.type Article en_US


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