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小行星541132

小行星541132
小行星541132(2015 TG387)、塞德娜2012 VP113的公轉軌道
发现 [1][2]
發現者大衛·J·托倫
斯科特·謝潑德
乍德·特魯希略
發現地毛納基山天文台
發現日期2015年10月13日
編號
其它名稱V302126 [3]
The Goblin[4][5]
小行星分類海王星外天體[6] · 類塞德娜天體[7][8]
軌道參數[6]
曆元 2019-4-27 (JD 2458600.5)
不確定參數 4 · 1 [1]
觀測弧3.0 yr(1,100 d)
遠日點1955.69 AU
近日點65.082 AU
半長軸1010.39 AU
離心率0.9356
軌道週期32117.29 yr
平近點角359.34°
軌道傾角11.658°
升交點黃經300.82°
近日點參數117.95°
物理特徵
幾何反照率0.09 (assumed)[8]
0.15 (assumed)[7]
視星等24.64[9]
絕對星等(H)5.3[6]
5.5[1]

小行星541132(Leleākūhonua,臨時編號:2015 TG387)是一顆海王星外天體[3],暱稱為「哥布林」[4][5],於2015年10月13日經由夏威夷毛納基山天文台發現。小行星541132是繼塞德娜2012 VP113之後發現的第三顆類塞德娜天體,其直徑約為350公里(220英里)。

發現史

[编辑]

2015年10月13日,毛納基山天文台(T09)首次觀測到2015 TG387,美國天文學家大衛·J·托倫斯科特·謝潑德乍德·特魯希略在調查古柏斷崖外天體中首次觀測到該天體[1][2]。非正式發現於2018年10月1日公開宣布[2][10]。該調查使用兩個望遠鏡:北半球昴星團望遠鏡及夏威夷毛納基山天文台超級望遠鏡、南半球托洛洛山美洲際天文台布蘭科望遠鏡及暗能量巡天。天文學家正在使用麥哲倫望遠鏡探索頻道望遠鏡確認該天體的軌道。該次巡天也發現2012 VP1132014 SR3492013 FT28[7]

參考資料

[编辑]
  1. ^ 1.0 1.1 1.2 1.3 2015 TG387. Minor Planet Center. [2018-12-13]. (原始内容存档于2019-02-13). 
  2. ^ 2.0 2.1 2.2 MPEC 2018-T05 : 2015 TG387. Minor Planet Electronic Circular. 2018-10-01 [2018-12-13]. (原始内容存档于2019-05-31). 
  3. ^ 3.0 3.1 Trujillo, C.; Sheppard, S.S.; Tholen, D.J.; Kaib, N. A New Inner Oort Cloud Object. 50th annual meeting of the AAS Division of Planetary Sciences. 2018-10-24 [2018-10-19]. abstract 311.09. (原始内容存档于2018-09-21). 
  4. ^ 4.0 4.1 Guarino, Ben. New dwarf planet spotted at the very fringe of our solar system. The Washington Post. 2018-10-02 [2018-10-03]. (原始内容存档于2018-10-20). 
  5. ^ 5.0 5.1 Chang, Kenneth. A Goblin World That Points Toward Hidden Planet Nine in the Solar System. The New York Times. 2018-10-02 [2018-10-02]. (原始内容存档于2019-09-20). 
  6. ^ 6.0 6.1 6.2 JPL Small-Body Database Browser: (2015 TG387) (2018-10-17 last obs.). Jet Propulsion Laboratory. [2018-12-13]. (原始内容存档于2020-04-14). 
  7. ^ 7.0 7.1 7.2 Sheppard, Scott; Trujillo, Chadwick; Tholen, David; Kaib, Nathan. A New High Perihelion Inner Oort Cloud Object. 2018-09-28. arXiv:1810.00013可免费查阅 [astro-ph.EP]. 
  8. ^ 8.0 8.1 Johnston, Wm. Robert. List of Known Trans-Neptunian Objects. Johnston's Archive. 2018-10-07 [2018-12-13]. (原始内容存档于2007-02-18). 
  9. ^ 2015 TG387 – Ephemerides. AstDyS-2, Asteroids – Dynamic Site, Department of Mathematics, University of Pisa, Italy. [2018-12-12]. (原始内容存档于2019-02-14). 
  10. ^ Mortillaro, Nicole. Discovery of new object supports theory of 'super-Earth' at edge of solar system. CBC News. 2018-10-02 [2018-10-02]. (原始内容存档于2020-12-08). 



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小行星541132
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