格利澤673

**Gl 673**
觀測資料; 曆元 J2000
星座	蛇夫座
星官
赤經	17h 25m 45.23266s
赤緯	+02° 06′ 41.1208″
視星等（V）	7.492
特性
光谱分类	K7V
U−B 色指数	1.261
B−V 色指数	1.373
天体测定
徑向速度 (Rv)	−24.4 km/s
自行 (μ)	赤经：−579.66 mas/yr ; 赤纬：−1,184.76 mas/yr
视差 (π)	129.6459 ± 0.0175 mas
距离	25.157 ± 0.003 ly ; (7.713 ± 0.001 pc)
绝对星等 (MV)	8.06
詳細資料
半徑	0.564 R☉
表面重力 (log g)	4.70
溫度	4,030 K
金属量 [Fe/H]	−0.20 dex
自轉	11.94 days
年齡	(205 ± 21) × 106 年
其他命名
	GJ 673, BD +02°3312, HD 157881, LHS 447, LTT 15175, GCTP 3955.00, SAO 122374, Wolf 718, Vys 794, HIP 85295.
參考資料庫
SIMBAD	资料
	Gliese 673 格利澤673在蛇夫座的位置;

格利澤673 是一顆位於蛇夫座的橙矮星。光譜分類為K7V^[2]。這個烘譜類型的主序星質量為太陽質量(M_☉)的60–70%。

這顆恆星相對靠近太陽，距離大約25.1光年。然而，儘管如此接近，它仍然太微弱，無法用肉眼觀察到。它被認為是一顆緩慢旋轉的恆星，具有相對較高的自行。

格利澤673是附近的橙矮星之一，在類太陽恆星和紅矮星之間的“最佳位置”，就生命存在的可能性及其易探測性而言（在這種情況下，行星可能位於該系統的外部保守宜居帶）。^[9]

參見

距離25–30光年的恆星列表

參考資料

^ ^1.0 ^1.1 ^1.2 ^1.3 van Leeuwen, F., Validation of the new Hipparcos reduction, Astronomy and Astrophysics, November 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 Koen, C.; et al, UBV(RI)_C JHK observations of Hipparcos-selected nearby stars, Monthly Notices of the Royal Astronomical Society, April 2010, 403 (4): 1949–1968, Bibcode:2010MNRAS.403.1949K, doi:10.1111/j.1365-2966.2009.16182.x 
^ Nordström, B.; et al, The Geneva-Copenhagen survey of the Solar neighbourhood. Ages, metallicities, and kinematic properties of ˜14 000 F and G dwarfs, Astronomy and Astrophysics, May 2004, 418: 989–1019, Bibcode:2004A&A...418..989N, S2CID 11027621, arXiv:astro-ph/0405198 , doi:10.1051/0004-6361:20035959
^ 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 van Belle, Gerard T.; von Braun, Kaspar, Directly Determined Linear Radii and Effective Temperatures of Exoplanet Host Stars, The Astrophysical Journal, April 2009, 694 (2): 1085–1098, Bibcode:2009ApJ...694.1085V, S2CID 18370219, arXiv:0901.1206 , doi:10.1088/0004-637X/694/2/1085
^ ^6.0 ^6.1 Frasca, A.; et al, REM near-IR and optical photometric monitoring of pre-main sequence stars in Orion. Rotation periods and starspot parameters, Astronomy and Astrophysics, December 2009, 508 (3): 1313–1330, Bibcode:2009A&A...508.1313F, S2CID 118361131, arXiv:0911.0760 , doi:10.1051/0004-6361/200913327
^ ^7.0 ^7.1 Barnes, Sydney A., Ages for Illustrative Field Stars Using Gyrochronology: Viability, Limitations, and Errors, The Astrophysical Journal, November 2007, 669 (2): 1167–1189, Bibcode:2007ApJ...669.1167B, S2CID 14614725, arXiv:0704.3068 , doi:10.1086/519295
^ LHS 447 -- High proper-motion Star, SIMBAD (Centre de Données astronomiques de Strasbourg), [2011-10-15], （原始内容存档于2023-03-28）
^ Arney, Giada N. The K Dwarf Advantage for Biosignatures on Directly Imaged Exoplanets. The Astrophysical Journal. 2019, 873 (1): L7. doi:10.3847/2041-8213/ab0651 .

外部連結

ARICNS

这是一篇关于主序星的小作品。您可以通过编辑或修订扩充其内容。

[aaa474_2_653-1] 1.0 ^1.1 ^1.2 ^1.3 van Leeuwen, F., Validation of the new Hipparcos reduction, Astronomy and Astrophysics, November 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, S2CID 18759600, arXiv:0708.1752 , doi:10.1051/0004-6361:20078357

[mnras403_4_1949-2] 2.0 ^2.1 ^2.2 ^2.3 ^2.4 ^2.5 Koen, C.; et al, UBV(RI)_C JHK observations of Hipparcos-selected nearby stars, Monthly Notices of the Royal Astronomical Society, April 2010, 403 (4): 1949–1968, Bibcode:2010MNRAS.403.1949K, doi:10.1111/j.1365-2966.2009.16182.x 

[aaa418_989-3] Nordström, B.; et al, The Geneva-Copenhagen survey of the Solar neighbourhood. Ages, metallicities, and kinematic properties of ˜14 000 F and G dwarfs, Astronomy and Astrophysics, May 2004, 418: 989–1019, Bibcode:2004A&A...418..989N, S2CID 11027621, arXiv:astro-ph/0405198 , doi:10.1051/0004-6361:20035959

[Gaia3-4] 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.

[apj694_2_1085-5] 5.0 ^5.1 van Belle, Gerard T.; von Braun, Kaspar, Directly Determined Linear Radii and Effective Temperatures of Exoplanet Host Stars, The Astrophysical Journal, April 2009, 694 (2): 1085–1098, Bibcode:2009ApJ...694.1085V, S2CID 18370219, arXiv:0901.1206 , doi:10.1088/0004-637X/694/2/1085

[aaa508_3_1313-6] 6.0 ^6.1 Frasca, A.; et al, REM near-IR and optical photometric monitoring of pre-main sequence stars in Orion. Rotation periods and starspot parameters, Astronomy and Astrophysics, December 2009, 508 (3): 1313–1330, Bibcode:2009A&A...508.1313F, S2CID 118361131, arXiv:0911.0760 , doi:10.1051/0004-6361/200913327

[apj669_2_1167-7] 7.0 ^7.1 Barnes, Sydney A., Ages for Illustrative Field Stars Using Gyrochronology: Viability, Limitations, and Errors, The Astrophysical Journal, November 2007, 669 (2): 1167–1189, Bibcode:2007ApJ...669.1167B, S2CID 14614725, arXiv:0704.3068 , doi:10.1086/519295

[SIMBAD-8] LHS 447 -- High proper-motion Star, SIMBAD (Centre de Données astronomiques de Strasbourg), [2011-10-15], （原始内容存档于2023-03-28）

[Arney2019-9] Arney, Giada N. The K Dwarf Advantage for Biosignatures on Directly Imaged Exoplanets. The Astrophysical Journal. 2019, 873 (1): L7. doi:10.3847/2041-8213/ab0651 .

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格利澤673

參見

參考資料

外部連結

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