日本地球惑星科学連合2018年大会

講演情報

[EE] Eveningポスター発表

セッション記号 P (宇宙惑星科学) » P-PS 惑星科学

[P-PS03] 太陽系小天体研究:現状の理解と将来の展望

2018年5月23日(水) 17:15 〜 18:30 ポスター会場 (幕張メッセ国際展示場 7ホール)

コンビーナ:石黒 正晃(ソウル大学物理天文学科)、中本 泰史(東京工業大学)、荒川 政彦(神戸大学大学院理学研究科、共同)、安部 正真(宇宙航空研究開発機構宇宙科学研究所)

[PPS03-P04] Observation Campaign of DESTINY+ Mission Target Asteroid 3200 Phaethon (1983 TB) during the 2017 Apparition

*MYUNGJIN KIM1Hee-Jae Lee1,2Sang-Min Lee1,2Dong-Heun Kim1,2Fumi Yoshida3Jintae Park1Young-Jun Choi1,4Hong-Kyu Moon1Hong-Suh Yim1Jin Choi1,4Eun-Jung Choi1Alexander Serebryanskiy5Maxim Krugov5Inna Reva5Ergashev Kamoliddin6Otabek Burhonov6Shuhrat A. Ehgamberdiev6 (1.Korea Astronomy and Space Science Institute、2.Chungbuk National University、3.Planetary Exploration Research Center (PERC), Chiba Institute of Technology、4.University of Science and Technology、5.Fesenkov Astrophysical Institute、6.Ulugh Beg Astronomical Institute)

キーワード:asteroids, Phaethon, photometry, lightcurve, shape

Near-Earth asteroid 3200 Phaethon (hereafter Phaethon) is the primary target of DESTINY+. The observation window for Phaethon in the end of 2017 is a good opportunity to acquire high quality dense photometric data as Phaethon passed the Earth only within 27 LD (Lunar Distance) on 16 Dec 2017, the closest approach in 40 years. However, the spin status including rotational period and pole orientation is not precisely constrained due to small variations in the lightcurve amplitude, probably resulting from a spheroidal shape. We carried out the photometric observation campaign for Phaethon between Asia and American Continents, during the period early Nov and mid-Dec 2017. We employed several telescopes: OWL 0.5 m, LOAO 1.0 m in Mt. Lemmon, USA, Maidanak 0.6 m in Uzbekistan, SOAO 0.6 m in Mt. Sobaek, Korea, 1.0 m in Kazakstan, BOAO 1.8 m in Mt. Bohyun, Korea. Based on our dataset, we will present the lightcurve and shape model of Phaethon.