天园十

天园十
觀測資料
曆元 J2000.0
星座 波江座
星官
赤經 04h 17m 53.66241s[1]
赤緯 −33° 47′ 54.0569″[1]
視星等（V） 3.56[2]
特性
光谱分类B8V + B9.5V[3]
U−B 色指数−0.36[2]
B−V 色指数−0.12[2]
天体测定
徑向速度 (Rv)+17.6[4] km/s
自行 (μ) 赤经：+62.52[1] mas/yr
赤纬：−7.24[1] mas/yr
视差 (π)18.33 ± 0.15[1] mas
距离178 ± 1 ly
(54.6 ± 0.4 pc)
绝对星等 (MV)−0.20[5]
軌道[6]
绕行周期 (P)5.0103250±0.0000008 d
半长轴 (a)1.902±0.006 mas
偏心率 (e)0
倾斜角 (i)146.2±0.1°
近心点 历元 (T)2454407.7214 ± 0.002 JD
半振幅 (K1)
(primary)		62.68±0.17[7] km/s
半振幅 (K2)
(secondary)		64.70±0.15[7] km/s
詳細資料 [6]
υ4 Eri A
質量3.17±0.07 M☉
半徑2.32±0.18 R☉
表面重力 (log g)4.21±0.07
亮度100.6±4.3 L☉
溫度12,930±440[8] K
自轉速度 (v sin i)19[8] km/s
年齡146[8] Myr
υ4 Eri B
質量3.07±0.07 M☉
半徑2.32±0.18 R☉
表面重力 (log g)4.21±0.07
亮度87.4±3.3 L☉
溫度12,250 K
其他命名
υ4 Eri, 41 Eridani, CD−34° 1614, HD 27376, HIP 20042, HR 1347, SAO 194902.[9]
參考資料庫
SIMBADdata

天园十（波江座υ4）是位于波江座的双星系统，其视星等为3.56[2]。

参考文献
  1. van Leeuwen, F., , Astronomy and Astrophysics, 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, arXiv:0708.1752, doi:10.1051/0004-6361:20078357.
  2. Mermilliod, J.-C., , Catalogue of Eggen's UBV data (SIMBAD), 1986, Bibcode:1986EgUBV........0M.
  3. Eggleton, P. P.; Tokovinin, A. A., , Monthly Notices of the Royal Astronomical Society, September 2008, 389 (2): 869–879, Bibcode:2008MNRAS.389..869E, arXiv:0806.2878, doi:10.1111/j.1365-2966.2008.13596.x.
  4. Evans, D. S., Batten, Alan Henry; Heard, John Frederick , 编, , Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30 (University of Toronto: International Astronomical Union), June 20–24, 1966, Bibcode:1967IAUS...30...57E.
  5. Hubrig, S.; 等, , Astronomy and Astrophysics, June 2001, 372: 152−164, Bibcode:2001A&A...372..152H, arXiv:astro-ph/0103201, doi:10.1051/0004-6361:20010452.
  6. Hummel, Christian A.; 等, , Astronomy & Astrophysics, March 2017, 600 (L5): 6, Bibcode:2016SPIE.9907E..0QH, arXiv:1703.07668, doi:10.1117/12.2231859.
  7. Hubrig, S.; 等, , Astronomy & Astrophysics, November 2012, 547: 24, Bibcode:2012A&A...547A..90H, arXiv:1208.2910, doi:10.1051/0004-6361/201219778, A90.
  8. David, Trevor J.; Hillenbrand, Lynne A., , The Astrophysical Journal, 2015, 804 (2): 146, Bibcode:2015ApJ...804..146D, arXiv:1501.03154, doi:10.1088/0004-637X/804/2/146.
  9. . SIMBAD. 斯特拉斯堡天文資料中心. [2016-10-13].
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