奚仲二
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| 觀測資料 曆元 J2000 | |
|---|---|
| 星座 | 天鵝座 |
| 星官 | |
| 赤經 | 19h 29m 42.36s[1] |
| 赤緯 | +51° 43′ 47.2″[1] |
| 視星等（V） | 3.77 |
| 特性 | |
| 光譜分類 | A5V[2] |
| B−V 色指數 | +0.15 |
| 天體測定 | |
| 徑向速度 (Rv) | −19.50[3] km/s |
| 自行 (μ) | 赤經：+20.59 mas/yr 赤緯：+128.33 mas/yr |
| 視差 (π) | 26.88 ± 0.11[1] mas |
| 距離 | 121.3 ± 0.5 ly (37.2 ± 0.2 pc) |
| 絕對星等 (MV) | +0.91[4] |
| 詳細資料 | |
| 質量 | 1.80[5] M☉ |
| 半徑 | 1.90 [6] R☉ |
| 表面重力 (log g) | 3.91[5] |
| 亮度 | 38[7] L☉ |
| 溫度 | 8,216±279[5] K |
| 年齡 | 577[5] Myr |
| 其他命名 | |
| 參考資料庫 | |
| SIMBAD | 資料 |
參考文獻
- ^ 1.0 1.1 1.2 van Leeuwen, F. Validation of the new Hipparcos reduction. Astronomy and Astrophysics. November 2007, 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752
. doi:10.1051/0004-6361:20078357.
- ^ Chesneau, O.; et al. Time, spatial, and spectral resolution of the Hα line-formation region of Deneb and Rigel with the VEGA/CHARA interferometer. Astronomy and Astrophysics. 2010, 521: A5. Bibcode:2010A&A...521A...5C. arXiv:1007.2095 . doi:10.1051/0004-6361/201014509.
- ^ Wilson, R. E., General Catalogue of Stellar Radial Velocities, Carnegie Institution of Washington, 1953, Bibcode:1953GCRV..C......0W, LCCN 54001336
- ^ Anderson, E.; Francis, Ch., XHIP: An extended hipparcos compilation, Astronomy Letters, 2012, 38 (5): 331, Bibcode:2012AstL...38..331A, arXiv:1108.4971 , doi:10.1134/S1063773712050015.
- ^ 5.0 5.1 5.2 5.3 David, Trevor J.; Hillenbrand, Lynne A., The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets, The Astrophysical Journal, 2015, 804 (2): 146, Bibcode:2015ApJ...804..146D, arXiv:1501.03154 , doi:10.1088/0004-637X/804/2/146.
- ^ Pasinetti Fracassini, L. E.; Pastori, L.; Covino, S.; Pozzi, A., Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition, Astronomy and Astrophysics, February 2001, 367: 521–524, Bibcode:2001A&A...367..521P, arXiv:astro-ph/0012289 , doi:10.1051/0004-6361:20000451 Vizier catalog entry （頁面存檔備份，存於互聯網檔案館）
- ^ Zorec, J.; Royer, F., Rotational velocities of A-type stars. IV. Evolution of rotational velocities, Astronomy & Astrophysics, January 2012, 537: A120, Bibcode:2012A&A...537A.120Z, arXiv:1201.2052 , doi:10.1051/0004-6361/201117691.
