格利泽829

Gliese 829

觀測資料 曆元 J2000.0
星座	飛馬座
星官
赤經	21^h 29^m 36.81225^s[1]
赤緯	+17° 38′ 35.8542″[1]
視星等（V）	10.35[2]
特性
光谱分类	M3.0Ve[3]
U−B 色指数	+1.31[2]
B−V 色指数	+1.61[2]
天体测定
徑向速度 (Rv)	−25.0[4] km/s
自行 (μ)	赤经：+1007.13[1] mas/yr 赤纬：+377.27[1] mas/yr
视差 (π)	147.4958 ± 0.0257[5] mas
距离	22.113 ± 0.004 ly (6.780 ± 0.001 pc)
軌道[6]
繞行週期 (P)	7006459829439999999♠53.221±0.004 d
偏心率 (e)	6999374000000000000♠0.374±0.004
近心点 曆元 (T)	7004489802000000000♠48980.2±0.2 JD
近心點幅角 (ω) (secondary)	7002300000000000000♠300±1°
半振幅 (K1) (primary)	7001187000000000000♠18.7±0.1 km/s
半振幅 (K2) (secondary)	7001187000000000000♠18.7±0.1 km/s
詳細資料
表面重力 (log g)	5.0[3]
溫度	3,400[3] K
金属量 [Fe/H]	−0.13[7] dex
其他命名
HIP 106106, Ross 775.[8]
參考資料庫
SIMBAD	资料
ARICNS	资料

格利泽829 是位於飛馬座中由兩顆紅矮星組成的雙星系統。^[6] 基於視差測量，距離太陽約為22光年。^[1] 該系統將在大約91,000年後最接近太陽，屆時它的近日點距離將達到17.65光年﹙5.41秒差距﹚。^[4]

特性

主星的溫度為3400K。它的光譜分類為M3.0Ve，B-V 顏色指數為1.61，也稱為Ross 775。它的視星等為10.35。

參考

1. 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. Ianna, P. A.; Whitman, W. R., Parallaxes and proper motions from the McCormick Observatory List 45, Astronomical Journal, April 1984, 89: 568–570, Bibcode:1984AJ.....89..568I, doi:10.1086/113550. 
3. Lépine, Sébastien; et al, A Spectroscopic Catalog of the Brightest (J < 9) M Dwarfs in the Northern Sky, The Astronomical Journal, 2013, 145 (4): 102, Bibcode:2013AJ....145..102L, S2CID 117144290, arXiv:1206.5991 , doi:10.1088/0004-6256/145/4/102. 
4. Bailer-Jones, C. A. L., Close encounters of the stellar kind, Astronomy & Astrophysics, March 2015, 575: 13, Bibcode:2015A&A...575A..35B, S2CID 59039482, arXiv:1412.3648 , doi:10.1051/0004-6361/201425221, A35. 
5. 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.
6. Delfosse, Xavier; et al, New neighbours. I. 13 new companions to nearby M dwarfs, Astronomy and Astrophysics, April 1999, 344: 897–910, Bibcode:1999A&A...344..897D, arXiv:astro-ph/9812008 . 
7. Rojas-Ayala, Bárbara; et al. Metallicity and Temperature Indicators in M Dwarf K-band Spectra: Testing New and Updated Calibrations with Observations of 133 Solar Neighborhood M Dwarfs (PDF). The Astrophysical Journal. April 2012, 748 (2): 93 [2023-03-23]. Bibcode:2012ApJ...748...93R. S2CID 41902340. arXiv:1112.4567 . doi:10.1088/0004-637X/748/2/93. （原始内容存档 (PDF)于2021-01-29）. 
8. Ross 775. SIMBAD. 斯特拉斯堡天文資料中心. [2016-10-25].