WISE J0521+1025是位于猎户座附近一颗光谱类型为 T7.5 的棕矮星[~ 1],距离地球大约5秒差距 (16.3 光年)。[1]

WISE J0521+1025
观测资料
历元 2012.773[1]
星座 猎户座
星官
赤经 05h 21m 26.349s[1]
赤纬 10° 25′ 27.41″[1]
视星等(V)
特性
光谱分类T7.5[1]
视星等 (J (2MASS))15.262[1]
视星等 (H (2MASS))15.222 ± 0.103[1]
视星等 (Ks (2MASS))14.665[1]
视星等 (w1 (WISE))14.098 ± 0.031[1]
视星等 (w2 (WISE))12.286 ± 0.026[1]
视星等 (w3 (WISE))10.306 ± 0.085[1]
天体测定
自行 (μ) 赤经:+232 ± 9[1] mas/yr
赤纬:-418 ± 6[1] mas/yr
视差 (π)150.2 ± 3.0[2] mas
距离21.7 ± 0.4 ly
(6.7 ± 0.1 pc)
其他命名
WISE J052126.29+102528.4[1]
WISE J0521+1025[1]
参考数据库
SIMBAD资料
WISE J0521+1025 is located in the constellation Orion
WISE J0521+1025 is located in the constellation Orion
WISE J0521+1025
WISE J0521+1025在猎户座的位置

这颗恒星是北天中最近的T型恒星。[1]

参见

编辑

注释

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  1. ^ 。这颗恒星也是猎户座中最接近太阳系的恒星系统

参考

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  1. ^ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 1.14 1.15 Bihain, Gabriel; Scholz, Ralf-Dieter; Storm, Jesper; Schnurr, Olivier. An overlooked brown dwarf neighbour (T7.5 at d~5pc) of the Sun and two additional T dwarfs at about 10pc. Astronomy & Astrophysics. 2013, 557: A43. Bibcode:2013A&A...557A..43B. S2CID 118454396. arXiv:1307.2722 . doi:10.1051/0004-6361/201322141. 
  2. ^ Kirkpatrick, J. Davy; Gelino, Christopher R.; Faherty, Jacqueline K.; Meisner, Aaron M.; Caselden, Dan; Schneider, Adam C.; Marocco, Federico; Cayago, Alfred J.; Smart, R. L.; Eisenhardt, Peter R.; Kuchner, Marc J. The Field Substellar Mass Function Based on the Full-sky 20 pc Census of 525 L, T, and y Dwarfs. The Astrophysical Journal Supplement Series. 2021, 253 (1): 7. Bibcode:2021ApJS..253....7K. S2CID 227126954. arXiv:2011.11616 . doi:10.3847/1538-4365/abd107.