@inproceedings{oai:jaxa.repo.nii.ac.jp:00038421, author = {小山, 泰弘 and 吉川, 真 and 岩田, 隆浩 and 中島, 潤一 and 関戸, 衛 and 中村, 昭子 and 平林, 久 and 岡田, 達明 and 安部, 正真 and 西堀, 俊幸 and Koyama, Yasuhiro and Yoshikawa, Makoto and Iwata, Takahiro and Nakajima, Junichi and Sekido, Mamoru and Nakamura, Akiko M. and Hirabayashi, Hisashi and Okada, Tatsuaki and Abe, Masanao and Nishibori, Toshiyuki}, book = {第28回月・惑星シンポジウム, Proceedings of the 28th ISAS Lunar and Planetary Symposium}, month = {Dec}, note = {By taking an opportunity of a close approach of an asteroid 6489 (= 1991 JX) to the Earth at 0.034 AU in June 1995, test observations of the radar echo from the asteroid were carried out under an international collaboration among the US, Russia and Japan. We report the detection of the radar echoes from the data obtained with 34 m antenna at Kashima. The asteroid 6489 became the first solar system object observed by means of radar technique in Japan and it was a quite important step towards the future radar observations of asteroids. Although the observations were short duration for test and demonstration purposes, we could retrieve information about the size and reflectivity of the asteroid., 資料番号: AA0063352054}, pages = {201--204}, publisher = {宇宙航空研究開発機構宇宙科学研究本部, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)}, title = {Radar observations of an asteroid 1991JX}, year = {1995} }