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名稱Title
2021天文年會
國立嘉義大學蘭潭校區
5月21日至23日

論文摘要

Photometric observations of TNOs from Zwicky Transient Facility

[ Poster ]

Hanjie Tan (IANCU), Chan-Kao Chang (ASIAA), Ying-Tung Chen (ASIAA), Ting-Shuo Yeh (IANCU)

Trans-Neptunian objects (TNOs) are minor bodies found in the outer Solar System, which keep important information of the early solar system. Although the physical properties have been collected for some relatively large TNOs in the last decade, the entire TNO population still lacks a comprehensive view, not to mention their rotation periods. Thanks to the wide field of view of the Zwicky Transient Facility, hundreds of TNOs were serendipitously observed such that their sparse light curves are available for rotation period measurement, shape determination and, color measurement. In this study, we extract the corresponding photometric data of TNOs and study their physical properties. Of particular interest is the high inclination Centaur object (517717) 2015 KZ120 which light curve was analyzed for the first time by us, we obtain a light curve with a rational period of 10.76 hours and amplitude of 0.44 mag. Moreover, the colors of several dozen TNOs were derived and reported for the first time here.