WISE J0521+1025
WISE J0521+1025是位於獵戶座附近一顆光譜類型為 T7.5 的棕矮星[~ 1]，距離地球大約5秒差距 (16.3 光年)。[1]
| 觀測資料 曆元 2012.773[1] | |
|---|---|
| 星座 | 獵戶座 |
| 星官 | |
| 赤經 | 05h 21m 26.349s[1] |
| 赤緯 | 10° 25′ 27.41″[1] |
| 視星等（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 | |
| 參考資料庫 | |
| SIMBAD | 资料 |
  WISE J0521+1025 WISE J0521+1025在獵戶座的位置 | |
這顆恆星是北天中最近的T型恆星。[1]
參見
註釋
- ^ 。這顆恆星也是獵戶座中最接近太陽系的恆星系統
參考
- ^ 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.
- ^ 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.
