2MASS J15404342−5101357

2MASS J15404341−5101357 (縮寫為 2M1540)是一顆位於矩尺座光譜類型為M7的紅矮星，距離地球約17.3光年。它是距離最近的已知M7矮星。[2]

2MASS J15404341−5101357
觀測資料
曆元 J2000
星座 矩尺座
星官
赤經 15h 40m 43.537s[1]
赤緯 -51° 01′ 35.968″[1]
視星等（V） 15.26[2]
特性
演化阶段主序星[2]
光谱分类M7V[2]
视星等 (J)8.96[3]
天体测定
徑向速度 (Rv)50.0[3] km/s
自行 (μ) 赤经：+1.954[2] mas/yr
赤纬：−0.330[2] mas/yr
视差 (π)187.7290 ± 0.0496[4] mas
距离17.374 ± 0.005 ly
(5.327 ± 0.001 pc)
詳細資料 [2]
質量0.090±0.010 M☉
亮度0.000603 L☉
溫度2621±100 K
其他命名
2MASS J154043.42-510135.7, WISEA J154045.67-510139.3, UCAC4 195-119117, Gaia DR2 5985290231327158144
參考資料庫
SIMBAD资料
2M1540 is located in the constellation Norma
2M1540 is located in the constellation Norma
2M1540
2M1540在矩尺座的位置

參考資料
  1. Brown, A. G. A.; Vallenari, A.; Prusti, T.; de Bruijne, J. H. J.; et al. . Astronomy & Astrophysics. 2018. Bibcode:2018A&A...616A...1G. arXiv:1804.09365 可免费查阅. doi:10.1051/0004-6361/201833051.
  2. Pérez Garrido, A.; Lodieu, N.; Béjar, V. J. S.; Ruiz, M. T.; Gauza, B.; Rebolo, R.; Zapatero Osorio, M. R. . Astronomy & Astrophysics. 2014, 567: A6. Bibcode:2014A&A...567A...6P. S2CID 118704532. arXiv:1405.5439 可免费查阅. doi:10.1051/0004-6361/201423615.
  3. Henry, Todd J.; Jao, Wei-Chun; Winters, Jennifer G.; Dieterich, Sergio B.; Finch, Charlie T.; Ianna, Philip A.; Riedel, Adric R.; Silverstein, Michele L.; Subasavage, John P.; Vrijmoet, Eliot Halley, , The Astronomical Journal, 2018, 155 (6): 265, Bibcode:2018AJ....155..265H, S2CID 53983430, arXiv:1804.07377 可免费查阅, doi:10.3847/1538-3881/aac262
  4. Brown, A. G. A.; et al. . Astronomy & Astrophysics. 2021, 649: A1. Bibcode:2021A&A...649A...1G. S2CID 227254300. arXiv:2012.01533 可免费查阅. doi:10.1051/0004-6361/202039657 可免费查阅. 已忽略未知参数|collaboration= (帮助) (勘误: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
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