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The size and thermal properties of the nucleus of Comet 22P/Kopff |
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| Authors: | O. Groussin P. Lamy M. Kelley M. A'Hearn J. Licandro S. Lowry C. Snodgrass |
| Affiliation: | a Laboratoire d'Astrophysique de Marseille, Technopôle de Marseille-Etoile, 38 rue Frédéric Joliot-Curie, 13388 Marseille Cedex 13, France b Konkoly Observatory, PO Box 67, Budapest 1525, Hungary c Univ. of Central Florida, Dept. of Physics, 4000 Central Florida Blvd., Orlando, FL 32828, United States d Univ. of Maryland, Dept. of Astronomy, College Park, MD 20742-2421, United States e Instituto de Astrofísica de Canarias, c/Vía Làctea s/n, 38205, La Laguna, Tenerife, Spain f Planetary Exploration Group, Space Department, Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Rd., Laurel, MD 20723, United States g NASA/Jet Propulsion Lab., 4800 Oak Grove Dr., Pasadena, CA 91109, United States h Univ. of Hawaii, 2680 Woodlawn Dr., Honolulu, HI 96822, United States i European Southern Observatory, Alonso de Cordova 3107, Casilla 19001, Santiago, Chile |
| Abstract: | We detected the nucleus of Comet 22P/Kopff at 4.87 AU from the Sun with the two IRS peak-up cameras of the Spitzer Space Telescope on April 19, 2007. Using the thermal model of [Groussin, O., and 15 colleagues, 2007. Icarus 187, 16-25], we derive a nucleus size of 1.89±0.16 km, in agreement with [Lamy, P., Toth, I., Jorda, L., Groussin, O., A'Hearn, M.F., Weaver, H.A., 2002. Icarus 156, 442-455], and a thermal inertia  . |
| Keywords: | Comets Comets, nucleus |
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