3 years ago

Earth and moon observations by thermal infrared imager on Hayabusa2 and the application to detectability of asteroid 162173 Ryugu

Jorn Helbert, Hiroki Senshu, Takehiko Arai, Naoya Sakatani, Tetsuya Fukuhara, Tatsuaki Okada, Jun Takita, Tomohiko Sekiguchi, Makoto Taguchi, Thomas G. Mueller, Yoshiko Ogawa, Hirohide Demura, Satoshi Tanaka, Toru Kouyama, Axel Hagermann
Thermal Infrared Imager TIR on Hayabusa2 has proven its in-flight performance to detect celestial bodies during the cruise phase, especially by the observations of the Earth and the Moon before and after the Earth swing-by on 3rd of December 2015. The result indicates that the target C-type asteroid 162173 Ryugu will be detected from the distance of 3000 km at the beginning of the approach phase, and that a C-type small moon larger than 1 m will be detected from the home position, 20 km from the asteroid, if it orbits around the asteroid.
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