@inproceedings{oai:jaxa.repo.nii.ac.jp:00020078, author = {Dermawan, Budi and 中村, 士 and 福島, 英雄 and 吉田, 二美 and 高橋, 茂 and 宮坂, 正大 and 佐藤, 祐介 and 宮地, 晃平 and 鈴木, 淳嗣 and Dermawan, Budi and Nakamura, Tsuko and Fukushima, Hideo and Yoshida, Fumi and Takahashi, Shigeru and Miyasaka, Seidai and Sato, Yusuke and Miyachi, Akihira and Suzuki, Atsushi}, book = {第24回太陽系科学シンポジウム 平成14年度, 24th Solar System Exploration Symposium 2002}, month = {Mar}, note = {The recently discovered Karin family is the youngest family (excitation time-scale T(sub e) approximately equal to 5.8 Myr) ever known today in the Main-belt (Nesvorny et al. 2002). Regarding its very young age and relatively small bodies (mostly few km-sized), lightcurves of two members, i.e. asteroids 1990 FV and 1999 CK(sub 16) were observed, and it was investigated whether a kind of tumbling motion is exhibited. Lightcurve of asteroid 1990 FV shows a common light variation along its rotation period of 6.58 hr, although a simple approach to its residual reveals a kind of periodic signal. Detail analysis should be performed to examine whether or not this signal manifests any physical meanings. On the other hand, lightcurve of asteroid 1999 CK(sub 16) was very noisy and difficult to reveal precisely its rotation period. However, this asteroid might fall into a large-size fast-rotator., 資料番号: AA0045916020}, pages = {81--84}, publisher = {宇宙科学研究所, The Institute of Space and Astronautical Science (ISAS)}, title = {Non-principal axis rotation of an asteroid: Light curves of Karin family asteroids}, year = {2003} }