格利泽54

格利泽54 (GJ 54 / HIP 5496 / LHS 1208)^[5]是位于杜鹃座边缘，几乎在邻近水蛇座的一个联星系统，距离地球25.7光年^[2]。视星等为+9.80，低于眼睛可观察到的亮度阈值^[5]。

Gliese 54

观测资料 历元 J2000
星座	杜鹃座
星官
赤经	01h 10m 22.8809s[1]
赤纬	−67° 26′ 41.9487″[1]
视星等（V）	9.80
特性
光谱分类	M2.5 (composite)
天体测定
自行 (μ)	赤经：7002386200000000000♠386.2±0.2[2] mas/yr 赤纬：7002579700000000000♠579.7±0.1[2] mas/yr
视差 (π)	126.9 ± 0.4[2] mas
距离	25.70 ± 0.08 ly (7.88 ± 0.02 pc)
绝对星等 (MV)	+10.23
轨道[3]
主星	Gliese 54 A
伴星	Gliese 54 B
绕行周期 (P)	1.14434+0.00022 −0.00022 yr
半长轴 (a)	0.12619+0.00039 −" (1.00 AU)
偏心率 (e)	0.1718+0.0024 −
倾斜角 (i)	125.32+0.35 −0.35°
详细资料 [4]
Gliese 54 A
质量	0.43 M☉
半径	0.51 R☉
温度	4250 K
金属量	0.17[3]
自转速度 (v sin i)	-15.0 km/s
Gliese 54 B
质量	0.3 M☉
其他命名
CD−68°47、​HIP 5496、​LHS 1208、​2MASS J01102281-6726425
参考资料库
SIMBAD	资料
ARICNS	资料

格利泽54是一颗红矮星，光谱类型为M2，有效温度为4250K。^[6] 它被列为变星^[5]。 它有一个伴星，与它形成一个轨道周期约为427天的双星系统。这颗伴星是一颗红矮星，其亮度比格利泽54低约1个星等。^[7]

参见

• 距离25–30光年的恒星列表

参考资料

1. Brown, A. G. A.; Vallenari, A.; Prusti, T.; de Bruijne, J. H. J.; et al. Gaia Data Release 2. Summary of the contents and survey properties. Astronomy & Astrophysics. 2018. Bibcode:2018A&A...616A...1G. arXiv:1804.09365 . doi:10.1051/0004-6361/201833051. VizieR中此天体在盖亚望远镜第二批数据发布的记录
2. Benedict, G. F.; et al. The Solar Neighborhood. XXXVII: The Mass-Luminosity Relation for Main-sequence M Dwarfs. The Astronomical Journal. 2016, 152 (5). 141. Bibcode:2016AJ....152..141B . arXiv:1608.04775 . doi:10.3847/0004-6256/152/5/141 .
3. Mann, Andrew W.; Dupuy, Trent; Kraus, Adam L.; Gaidos, Eric; Ansdell, Megan; Ireland, Michael; Rizzuto, Aaron C.; Hung, Chao-Ling; Dittmann, Jason; Factor, Samuel; Feiden, Gregory; Martinez, Raquel A.; Ruíz-Rodríguez, Dary; Chia Thao, Pa, How to constrain your M dwarf. II. The Mass-Luminosity-Metallicity relation from 0.075 to 0.70 solar masses, The Astrophysical Journal, 2019, 871 (1): 63, Bibcode:2019ApJ...871...63M, S2CID 119372932, arXiv:1811.06938 , doi:10.3847/1538-4357/aaf3bc
4. 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 Solar Neighborhood XLIV: RECONS Discoveries within 10 Parsecs, The Astronomical Journal, 2018, 155 (6): 265, Bibcode:2018AJ....155..265H, S2CID 53983430, arXiv:1804.07377 , doi:10.3847/1538-3881/aac262
5. CD-68 47. SIMBAD. 斯特拉斯堡天文资料中心. [6 May 2017].
6. Morales, J. C.; Ribas, I.; Jordi, C. The effect of activity on stellar temperatures and radii. Astronomy and Astrophysics. 2008, 478 (2): 507. Bibcode:2008A&A...478..507M. S2CID 16238033. arXiv:0711.3523 . doi:10.1051/0004-6361:20078324. pp. 507-512 (Table consulted on CDS).
7. Golimowski, David A.; Henry, Todd J.; Krist, John E.; Dieterich, Sergio; Ford, Holland C.; Illingworth, Garth D.; Ardila, David R.; Clampin, Mark; Franz, Otto G.; Wasserman, Lawrence H.; Benedict, G. Fritz; McArthur, Barbara E.; Nelan, Edmund G. The Solar Neighborhood. IX. Hubble Space Telescope Detections of Companions to Five M and L Dwarfs Within 10 parsecs of the Sun. The Astronomical Journal. 2004, 128 (4): 1733–1747. Bibcode:2004AJ....128.1733G. S2CID 12310839. arXiv:astro-ph/0406664 . doi:10.1086/423911.