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R- and J-band photometry of Comets 2P/Encke and 9P/Tempel 1 |
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| Authors: | Carl W Hergenrother Beatrice EA Mueller NH Samarasinha |
| Institution: | a Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721, USA b National Optical Astronomy Observatory,11The National Optical Astronomy Observatory is operated by the Association of Universities for Research in Astronomy, Inc. (AURA) under cooperative agreement with the National Science Foundation. 950 N. Cherry Av., Tucson, AZ 85719, USA c University of Central Florida, Orlando, FL 32186, USA d Steward Observatory, University of Arizona, Tucson, AZ 85721, USA |
| Abstract: | Near-simultaneous R- and J-band photometric measurements of the short-period Comets 2P/Encke and the Deep Impact mission target 9P/Tempel 1 were obtained. The resulting R-J colors are +0.82±0.08 mag and +1.46±0.13 mag for Encke and Tempel 1, respectively. Tempel 1's color is redder than the solar R-J color index of +0.76. The Tempel 1 observations directly detected the nucleus while the Encke observations likely suffered from coma contamination. |
| Keywords: | Comets Photometry Spectrophotometry |
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