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奚仲二

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奚仲二
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
10 Cygni, BD+51° 2605, GC 26947, HIP 95853, HR 7420, HD 184006, SAO 31702
參考資料庫
SIMBAD資料

奚仲二(天鵝座ι2)是位於天鵝座的恆星,其視星等為3.77

參考文獻

[編輯]
  1. ^ 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可免費查閱. doi:10.1051/0004-6361:20078357. 
  2. ^ 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可免費查閱. doi:10.1051/0004-6361/201014509. 
  3. ^ Wilson, R. E., General Catalogue of Stellar Radial Velocities, Carnegie Institution of Washington, 1953, Bibcode:1953GCRV..C......0W, LCCN 54001336 
  4. ^ Anderson, E.; Francis, Ch., XHIP: An extended hipparcos compilation, Astronomy Letters, 2012, 38 (5): 331, Bibcode:2012AstL...38..331A, arXiv:1108.4971可免費查閱, doi:10.1134/S1063773712050015. 
  5. ^ 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可免費查閱, doi:10.1088/0004-637X/804/2/146. 
  6. ^ 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可免費查閱, doi:10.1051/0004-6361:20000451  Vizier catalog entry頁面存檔備份,存於互聯網檔案館
  7. ^ 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可免費查閱, doi:10.1051/0004-6361/201117691.