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厕四(天兔座δ)是位于天兔座的恒星,其视星等为3.85,距地球114光年。

厕四
觀測資料
曆元 J2000.0
星座 天兔座
星官
赤經 05h 51m 19.29613s[1]
赤緯 −20° 52′ 44.7232″[1]
視星等(V) 3.85[2]
特性
光谱分类K1 IV Fe−0.5[3] or K0 IIIb Fe−1.5 CH0.5[4]
U−B 色指数+0.71[2]
B−V 色指数+0.98[2]
天体测定
徑向速度 (Rv)+100.20[5] km/s
自行 (μ) 赤经:+229.49[1] mas/yr
赤纬:−648.41[1] mas/yr
视差 (π)28.68 ± 0.17[1] mas
距离113.7 ± 0.7 ly
(34.9 ± 0.2 pc)
绝对星等 (MV)+1.04[6]
詳細資料
質量0.94[6] M
半徑10[7] R
表面重力 (log g)2.46±0.23[8]
亮度45.7[6] L
溫度4,660±84[8] K
金属量 [Fe/H]−0.74±0.09[8] dex
自轉速度 (v sin i)0[9] km/s
年齡10.7[6] Gyr
其他命名
 Lep15 LepBD−20° 1211FK5 222、GC 7362、HD 39364、HIP 27654、HR 2035、SAO 170926、LHS 1792[10]
參考資料庫
SIMBADdata


参考文献编辑

  1. ^ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F., Validation of the new Hipparcos reduction, Astronomy and Astrophysics, 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, arXiv:0708.1752, doi:10.1051/0004-6361:20078357. 
  2. ^ 2.0 2.1 2.2 Ducati, J. R., VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system, CDS/ADC Collection of Electronic Catalogues, 2002, 2237, Bibcode:2002yCat.2237....0D. 
  3. ^ Gray, R. O.; 等, Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample, The Astronomical Journal, July 2006, 132 (1): 161–170, Bibcode:2006AJ....132..161G, arXiv:astro-ph/0603770, doi:10.1086/504637. 
  4. ^ Keenan, Philip C.; McNeil, Raymond C., The Perkins catalog of revised MK types for the cooler stars, Astrophysical Journal Supplement Series, 1989, 71: 245, Bibcode:1989ApJS...71..245K, doi:10.1086/191373. 
  5. ^ Gontcharov, G. A., Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system, Astronomy Letters, November 2006, 32 (11): 759–771, Bibcode:2006AstL...32..759G, arXiv:1606.08053, doi:10.1134/S1063773706110065. 
  6. ^ 6.0 6.1 6.2 6.3 Takeda, Yoichi; 等, Stellar Parameters and Elemental Abundances of Late-G Giants, Publications of the Astronomical Society of Japan, August 2008, 60 (4): 781–802, Bibcode:2008PASJ...60..781T, arXiv:0805.2434, doi:10.1093/pasj/60.4.781. 
  7. ^ Lang, Kenneth R., Astrophysical formulae, Astronomy and astrophysics library 1 3rd, Birkhäuser, 2006, ISBN 3-540-29692-1.  The radius (R*) is given by:
     
  8. ^ 8.0 8.1 8.2 Sharma, Kaushal; 等, New atmospheric parameters and spectral interpolator for the MILES cool stars, Astronomy & Astrophysics, 2016, 585: 27, Bibcode:2016A&A...585A..64S, arXiv:1512.04882, doi:10.1051/0004-6361/201526111, A64. 
  9. ^ Uesugi, Akira; Fukuda, Ichiro, Catalogue of rotational velocities of the stars, Contributions from the Institute of Astrophysics and Kwasan Observatory (University of Kyoto), 1970, Bibcode:1970crvs.book.....U. 
  10. ^ del Lep. SIMBAD. 斯特拉斯堡天文資料中心. [2017-08-18].