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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

Results from TMDS observations of the Geminid meteor shower from 2017 to 2020

[ Poster ]

Shi-Yun Hu(Department of Physics, National Dong Hwa University, Hualien, Taiwan);Yan-Ping Chen(Department of Physics, National Dong Hwa University, Hualien, Taiwan);Tien-Tzu Chin(Department of Physics, National Dong Hwa University, Hualien, Taiwan);Jim Lee(Taipei Astronomical Museum, Taipei, Taiwan); Zhong-Yi Lin(Graduate Institute of Astronomy, National Central University, Taoyuan, Taiwan);Hsin-Chang Chi(Department of Physics, National Dong Hwa University, Hualien, Taiwan)

We perform a year-to-year comparative study of the Geminid meteoroid stream from years 2017 to 2020. Meteors with radiant from Geminids are summarized as observed over in an eligible period between early Dec. to mid-to-late Dec.; it is further noticed that the shower activity regularly peaked in the nighttime from Dec. 14 evening to Dec. 15 early morning. The absolute magnitudes and the speed distributions are statistically analyzed for comparisons with available investigations. In addition, meteors with components from simultaneous multi-station detections in the TMDS are sorted out to determine associated orbits, of which the similarities with their parent body, (3200) Phaethon, are justified successively by invoking the DSH criterion.