zh %E5%A4%A9%E5%9B%AD%E5%8D%81

**天园十**
觀測資料; 曆元 J2000.0
星座	波江座
星官
赤經	04h 17m 53.66241s
赤緯	−33° 47′ 54.0569″
視星等（V）	3.56
特性
光谱分类	B8V + B9.5V
U−B 色指数	−0.36
B−V 色指数	−0.12
天体测定
徑向速度 (Rv)	+17.6 km/s
自行 (μ)	赤经：+62.52 mas/yr ; 赤纬：−7.24 mas/yr
视差 (π)	18.33 ± 0.15 mas
距离	178 ± 1 ly ; (54.6 ± 0.4 pc)
绝对星等 (MV)	−0.20
	軌道
繞行週期 (P)	5.0103250±0.0000008 d
半長軸 (a)	1.902±0.006 mas
偏心率 (e)	0
倾斜角 (i)	146.2±0.1°
近心点曆元 (T)	2454407.7214 ± 0.002 JD
半振幅 (K1); (primary)	62.68±0.17 km/s
半振幅 (K2); (secondary)	64.70±0.15 km/s
詳細資料
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 K
自轉速度 (v sin i)	19 km/s
年齡	146 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.
參考資料庫
SIMBAD	资料

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

^ ^1.0 ^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.
^ ^2.0 ^2.1 ^2.2 ^2.3 Mermilliod, J.-C., Compilation of Eggen's UBV data, transformed to UBV (unpublished), Catalogue of Eggen's UBV data (SIMBAD), 1986, Bibcode:1986EgUBV........0M.
^ Eggleton, P. P.; Tokovinin, A. A., A catalogue of multiplicity among bright stellar systems, 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.
^ Evans, D. S., Batten, Alan Henry; Heard, John Frederick , 编, The Revision of the General Catalogue of Radial Velocities, 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.
^ Hubrig, S.; et al, Search for low-mass PMS companions around X-ray selected late B stars, Astronomy and Astrophysics, June 2001, 372: 152−164, Bibcode:2001A&A...372..152H, arXiv:astro-ph/0103201 , doi:10.1051/0004-6361:20010452.
^ ^6.0 ^6.1 Hummel, Christian A.; et al, The orbit of the mercury-manganese binary 41 Eridani, Astronomy & Astrophysics, March 2017, 600 (L5): 6, Bibcode:2016SPIE.9907E..0QH, arXiv:1703.07668 , doi:10.1117/12.2231859.
^ ^7.0 ^7.1 Hubrig, S.; et al, Magnetic fields of HgMn stars, Astronomy & Astrophysics, November 2012, 547: 24, Bibcode:2012A&A...547A..90H, arXiv:1208.2910 , doi:10.1051/0004-6361/201219778, A90.
^ ^8.0 ^8.1 ^8.2 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.
^ * ups04 Eri -- Spectroscopic binary. SIMBAD. 斯特拉斯堡天文資料中心. [2016-10-13].

[vanLeeuwen2007-1] 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.

[Mermilliod1986-2] 2.0 ^2.1 ^2.2 ^2.3 Mermilliod, J.-C., Compilation of Eggen's UBV data, transformed to UBV (unpublished), Catalogue of Eggen's UBV data (SIMBAD), 1986, Bibcode:1986EgUBV........0M.

[Eggleton2008-3] Eggleton, P. P.; Tokovinin, A. A., A catalogue of multiplicity among bright stellar systems, 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.

[rgcrv-4] Evans, D. S., Batten, Alan Henry; Heard, John Frederick , 编, The Revision of the General Catalogue of Radial Velocities, 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.

[Hubrig2001-5] Hubrig, S.; et al, Search for low-mass PMS companions around X-ray selected late B stars, Astronomy and Astrophysics, June 2001, 372: 152−164, Bibcode:2001A&A...372..152H, arXiv:astro-ph/0103201 , doi:10.1051/0004-6361:20010452.

[Hummel2017-6] 6.0 ^6.1 Hummel, Christian A.; et al, The orbit of the mercury-manganese binary 41 Eridani, Astronomy & Astrophysics, March 2017, 600 (L5): 6, Bibcode:2016SPIE.9907E..0QH, arXiv:1703.07668 , doi:10.1117/12.2231859.

[Hubrig2012-7] 7.0 ^7.1 Hubrig, S.; et al, Magnetic fields of HgMn stars, Astronomy & Astrophysics, November 2012, 547: 24, Bibcode:2012A&A...547A..90H, arXiv:1208.2910 , doi:10.1051/0004-6361/201219778, A90.

[David2015-8] 8.0 ^8.1 ^8.2 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.

[SIMBAD-9] * ups04 Eri -- Spectroscopic binary. SIMBAD. 斯特拉斯堡天文資料中心. [2016-10-13].

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