Photometric Observations and Analysis of Active Asteroid (62412) 2000 SY178
文献类型：期刊论文
| 作者 | Fan XY(范相钰)2,3; Zhang XL(张西亮)2,3; Xu, Xiaomeng1; Wang L(王玲)2,3 |
| 刊名 | ASTRONOMICAL JOURNAL
 |
| 出版日期 | 2026-02-02 |
| 卷号 | 171期号:2 |
| ISSN号 | 0004-6256 |
| DOI | 10.3847/1538-3881/ae2678 |
| 产权排序 | 第1完成单位 |
| 文献子类 | Article |
| 英文摘要 | The active asteroid (62412) 2000 SY178 is a C-type object located in the outer main belt and was first reported to exhibit a dust tail in 2014 May. Before and after its recent perihelion, we carried out long-term observations of 2000 SY178 with the Lijiang 2.4 m telescope between 2024 January 15 and 2025 May 13 to detect its activity and physical properties. In our research, the absolute magnitude was determined to be H = 14.02 +/- 0.31 mag, which is consistent with the value of H = 14.07 +/- 0.24 mag observed during the 2014 active event. Using this magnitude, we derived the effective radius of 2000 SY178 as re = 3.95 +/- 0.05 km. We modeled the light curves of 2000 SY178 with the Cellinoid shape model and derived its six axis ratios as a1 = 1.0 +/- 0.0000, a2 = 1.3695 +/- 0.0093, b1 = 1.6748 +/- 0.0076, b2 = 1.6691 +/- 0.0080, c1 = 2.0267 +/- 0.0093, and c2 = 0.0324 +/- 0.0023. Assuming 2000 SY178 is a strengthless rubble pile, its current rotation period of 3.328 hr exceeds the critical limit for rotational stability, suggesting that the observed activity 1is likely triggered by rotational destabilization. |
| 学科主题 | 天文学 ; 太阳与太阳系 |
| URL标识 | 查看原文 |
| 出版地 | No.2 The Distillery, Glassfields, Avon Street, Bristol, ENGLAND |
| WOS关键词 | CELLINOID SHAPE MODEL ; MAIN-BELT ASTEROIDS ; INVERSION ; BODIES |
| 资助项目 | CAS divided by West Light Foundation, Chinese Academy of Sciences (West Light Foundation of CAS)[NO.CMS-CSST-2021-B10.]; (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic) divided by Applied Basic Research Foundation of Yunnan Province (Yunnan Province Applied and Basic Research Foundation)[NO. 202501AS070006] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001655172100001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | CAS divided by West Light Foundation, Chinese Academy of Sciences (West Light Foundation of CAS)[NO.CMS-CSST-2021-B10.] ; (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic) divided by Applied Basic Research Foundation of Yunnan Province (Yunnan Province Applied and Basic Research Foundation)[NO. 202501AS070006] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/28812]  |
| 专题 | 云南天文台_丽江天文观测站（南方基地） |
| 通讯作者 | Fan XY(范相钰) |
| 作者单位 | 1.Space Science Institute, Macau University of Science and Technology, Macau 999078, People’s Republic of China 2.School of Astronomy and Space Science, University of Chinese Academy of Sciences (UCAS), Beijing, 100049, People’s Republic of China; 3.Yunnan Observatories, Chinese Academy of Sciences (CAS), Kunming 650216, People’s Republic of China; |
| 推荐引用方式 GB/T 7714 | Fan XY,Zhang XL,Xu, Xiaomeng,et al. Photometric Observations and Analysis of Active Asteroid (62412) 2000 SY178[J]. ASTRONOMICAL JOURNAL,2026,171(2). |
| APA | 范相钰,张西亮,Xu, Xiaomeng,&王玲.(2026).Photometric Observations and Analysis of Active Asteroid (62412) 2000 SY178.ASTRONOMICAL JOURNAL,171(2). |
| MLA | 范相钰,et al."Photometric Observations and Analysis of Active Asteroid (62412) 2000 SY178".ASTRONOMICAL JOURNAL 171.2(2026). |
入库方式： OAI收割
来源：云南天文台
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