格利泽809
| 观测资料 历元 J2000 | |
|---|---|
| 星座 | 仙王座 |
| 星官 | |
| 赤经 | 20h 53m 19.79051s[1] |
| 赤纬 | +62° 09′ 15.8028″[1] |
| 视星等（V） | 8.54[2] |
| 特性 | |
| 光谱分类 | M2V[2] |
| 天体测定 | |
| 径向速度 (Rv) | −17.30±0.09[3] km/s |
| 自行 (μ) | 赤经：1.56[1] mas/yr 赤纬：−774.55[1] mas/yr |
| 视差 (π) | 142.0543 ± 0.0160[4] mas |
| 距离 | 22.960 ± 0.003 ly (7.0396 ± 0.0008 pc) |
| 绝对星等 (MV) | 9.31[5] |
| 详细资料 | |
| 质量 | 0.614[2] M☉ |
| 半径 | 0.705±0.023[6] R☉ |
| 温度 | 3,597[2] K |
| 金属量 [Fe/H] | −0.06[2] dex |
| 自转速度 (v sin i) | 2.8[2] km/s |
| 其他命名 | |
| 参考数据库 | |
| SIMBAD | 资料 |
| ARICNS | 资料 |
格利泽809位于仙王座的一颗红矮星[5]。视星等为8.55，肉眼难以看见。距离太阳系23光年。格利泽809的半径为太阳的70.5%[6]，质量为太阳的61.4%[2]。它的金属量为-0.06，这意味着氢和氦以外元素的丰度仅为太阳的87.1%。[2]
它是一颗具有高自行的恒星，相对于背景恒星每年移动约0.77角秒。[7] 在物理术语中，它相对于太阳系以31.1km/s的空间速度行进。[5]这颗恒星的银河轨道从其近心点21,300光年到远心点的30,600光年。轨道偏心率为17.8%，半长轴为25,956光年，半短轴为25,542光年。[5]
参见
参考
- ^ 1.0 1.1 1.2 1.3 van Leeuwen, F., Validation of the new Hipparcos reduction, Astronomy and Astrophysics, 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, S2CID 18759600, arXiv:0708.1752
, doi:10.1051/0004-6361:20078357.
- ^ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Jenkins, J. S.; Ramsey, L. W.; Jones, H. R. A.; Pavlenko, Y.; Gallardo, J.; Barnes, J. R.; Pinfield, D. J., Rotational Velocities for M Dwarfs, The Astrophysical Journal, October 2009, 704 (2): 975–988, Bibcode:2009ApJ...704..975J, S2CID 119203469, arXiv:0908.4092 , doi:10.1088/0004-637X/704/2/975.
- ^ Nidever, David L.; et al, Radial Velocities for 889 Late-Type Stars, The Astrophysical Journal Supplement Series, August 2002, 141 (2): 503–522, Bibcode:2002ApJS..141..503N, S2CID 51814894, arXiv:astro-ph/0112477 , doi:10.1086/340570.
- ^ Brown, A. G. A.; et al. Gaia Early Data Release 3: Summary of the contents and survey properties. Astronomy & Astrophysics. 2021, 649: A1. Bibcode:2021A&A...649A...1G. S2CID 227254300. arXiv:2012.01533 . doi:10.1051/0004-6361/202039657 . 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. - ^ 5.0 5.1 5.2 5.3 Gliese 809 (HIP 103096). Ashland Astronomy Studio. [28 March 2014]. （原始内容存档于2014-04-15）.
- ^ 6.0 6.1 Houdebine, E. R., Observation and modelling of main-sequence star chromospheres - XIV. Rotation of dM1 stars, Monthly Notices of the Royal Astronomical Society, September 2010, 407 (3): 1657–1673, Bibcode:2010MNRAS.407.1657H, doi:10.1111/j.1365-2966.2010.16827.x .
- ^ 7.0 7.1 [ GJ 809] 请检查
|url=值 (帮助). SIMBAD. 斯特拉斯堡天文资料中心. [2015-07-06].
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ||||||||||||||||||||||||||||||||
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.
Cover photo is available under {{::mainImage.info.license.name || 'Unknown'}} license.
Cover photo is available under {{::mainImage.info.license.name || 'Unknown'}} license.
Credit:
(see original file).
