水府一

**水府一( 猎户座ν)**
	水府一的位置(红圈)
观测资料; 历元 J2000.0
星座	猎户座
星官	水府（参宿）
赤经	06h 07m 34.32588s
赤纬	+14° 46′ 06.5061″
视星等（V）	4.42
特性
光谱分类	B3 V or B3 IV
U−B 色指数	−0.67
B−V 色指数	−0.18
天体测定
径向速度 (Rv)	+24.1 km/s
自行 (μ)	赤经：+6.78 mas/yr ; 赤纬：−20.23 mas/yr
视差 (π)	6.32 ± 0.33 mas
距离	520 ± 30 ly ; (158 ± 8 pc)
	轨道
绕行周期 (P)	131.211 d
偏心率 (e)	0.64
近心点历元 (T)	2436475.852 JD
近心点幅角 (ω); (secondary)	6.6°
半振幅 (K1); (primary)	33.3 km/s
详细资料
ν Ori A
质量	6.7±0.1 M☉
半径	4.3 R☉
表面重力 (log g)	4.06
亮度	1,965 L☉
温度	17,880 K
金属量 [Fe/H]	−0.05 dex
自转速度 (v sin i)	30 km/s
年龄	26.3±5.3 Myr
其他命名
	ν Ori, 67 Orionis, BD+14° 1152, FK5 232, HD 41753, HIP 29038, HR 2159, SAO 95259.
参考资料库
SIMBAD	资料

水府一（猎户座ν）是位于猎户座东北部的一对联星^[11]，不要将其与变星猎户座NU混淆^[12]。水府一的视星等为4.42^[2]，这足够明亮，因此可以用肉眼直接看到。依据0.00632弧秒的年周视差^[1]，这个系统的距离大约是520光年。

这是肘有一组谱线的光谱联星系统^[9]，这意味著只能分析其中一个成员的吸收谱线特征。根据这个分量的绕行，周期为131.2天，离心率为0.64^[6]。根据这个来源，主星要么是恒星分类为B3V的B型主序星^[3]，或是已经演化成为B3IV的B型次巨星^[4]。它的角直径为0.251mas^[13]，以这个系统的距离估计，它的实际半径约为4.3R_☉（太阳半径）^[7]，质量是6.7M_☉（太阳质量）^[4]，光度是1,965L_☉（太阳光度）^[3]，大气层表面的有效温度为17,880K^[8]。

参考资料

^ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 van Leeuwen, F., Validation of the new Hipparcos reduction, Astronomy and Astrophysics, 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, S2CID 18759600, arXiv:0708.1752 , doi:10.1051/0004-6361:20078357.
^ ^2.0 ^2.1 ^2.2 ^2.3 Crawford, D. L.; et al, Four-color, H-beta, and UBV photometry for bright B-type stars in the northern hemisphere, The Astronomical Journal, 1971, 76: 1058, Bibcode:1971AJ.....76.1058C, doi:10.1086/111220.
^ ^3.0 ^3.1 ^3.2 ^3.3 Hohle, M. M.; et al, Masses and luminosities of O- and B-type stars and red supergiants, Astronomische Nachrichten, April 2010, 331 (4): 349–360, Bibcode:2010AN....331..349H, S2CID 111387483, arXiv:1003.2335 , doi:10.1002/asna.200911355.
^ ^4.0 ^4.1 ^4.2 ^4.3 ^4.4 Tetzlaff, N.; et al, A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun, Monthly Notices of the Royal Astronomical Society, 2011, 410 (1): 190–200, Bibcode:2011MNRAS.410..190T, S2CID 118629873, arXiv:1007.4883 , doi:10.1111/j.1365-2966.2010.17434.x.
^ Evans, D. S., The Revision of the General Catalogue of Radial Velocities, Batten, Alan Henry; Heard, John Frederick (编), Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30 30, University of Toronto: International Astronomical Union: 57, June 20–24, 1966, Bibcode:1967IAUS...30...57E.
^ ^6.0 ^6.1 Pourbaix, D.; et al, S_B⁹: The ninth catalogue of spectroscopic binary orbits, Astronomy and Astrophysics, 2004, 424 (2): 727–732, Bibcode:2004A&A...424..727P, S2CID 119387088, arXiv:astro-ph/0406573 , doi:10.1051/0004-6361:20041213.
^ ^7.0 ^7.1 Lang, Kenneth R., Astrophysical formulae, Astronomy and astrophysics library 1 3rd, Birkhäuser, 2006 [2021-12-06], ISBN 3-540-29692-1, （原始内容存档于2019-05-20）. . The radius (R_*) is given by:
${\begin{aligned}2\cdot R_{*}&={\frac {(158.2\cdot 0.251\cdot 10^{-3})\ {\text{AU}}}{0.0046491\ {\text{AU}}/R_{\bigodot }}}\\&\approx 8.5\cdot R_{\bigodot }\end{aligned}}$
^ ^8.0 ^8.1 ^8.2 ^8.3 Gies, Douglas R.; Lambert, David L., Carbon, nitrogen, and oxygen abundances in early B-type stars, Astrophysical Journal, Part 1, March 1992, 387: 673–700, Bibcode:1992ApJ...387..673G, doi:10.1086/171116.
^ ^9.0 ^9.1 Abt, Helmut A.; et al, Rotational Velocities of B Stars, The Astrophysical Journal, July 2002, 573 (1): 359–365, Bibcode:2002ApJ...573..359A, doi:10.1086/340590 .
^ nu. Ori. SIMBAD. 斯特拉斯堡天文资料中心.
^ 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, S2CID 14878976, arXiv:0806.2878 , doi:10.1111/j.1365-2966.2008.13596.x.
^ Marett-Crosby, Michael, Twenty-Five Astronomical Observations That Changed the World: And How To Make Them Yourself, The Patrick Moore Practical Astronomy Series, Springer Science & Business Media: 93, 2013 [2021-12-06], ISBN 978-1461468004, （原始内容存档于2021-12-06）.
^ Zorec, J.; et al, Fundamental parameters of B supergiants from the BCD system. I. Calibration of the (λ_1, D) parameters into T_eff, Astronomy and Astrophysics, July 2009, 501 (1): 297–320, Bibcode:2009A&A...501..297Z, S2CID 14969137, arXiv:0903.5134 , doi:10.1051/0004-6361/200811147.

[vanLeeuwen2007-1] 1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 van Leeuwen, F., Validation of the new Hipparcos reduction, Astronomy and Astrophysics, 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, S2CID 18759600, arXiv:0708.1752 , doi:10.1051/0004-6361:20078357.

[Crawford1971-2] 2.0 ^2.1 ^2.2 ^2.3 Crawford, D. L.; et al, Four-color, H-beta, and UBV photometry for bright B-type stars in the northern hemisphere, The Astronomical Journal, 1971, 76: 1058, Bibcode:1971AJ.....76.1058C, doi:10.1086/111220.

[Neuhaeuser2010-3] 3.0 ^3.1 ^3.2 ^3.3 Hohle, M. M.; et al, Masses and luminosities of O- and B-type stars and red supergiants, Astronomische Nachrichten, April 2010, 331 (4): 349–360, Bibcode:2010AN....331..349H, S2CID 111387483, arXiv:1003.2335 , doi:10.1002/asna.200911355.

[tetzlaff2011-4] 4.0 ^4.1 ^4.2 ^4.3 ^4.4 Tetzlaff, N.; et al, A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun, Monthly Notices of the Royal Astronomical Society, 2011, 410 (1): 190–200, Bibcode:2011MNRAS.410..190T, S2CID 118629873, arXiv:1007.4883 , doi:10.1111/j.1365-2966.2010.17434.x.

[rgcrv-5] Evans, D. S., The Revision of the General Catalogue of Radial Velocities, Batten, Alan Henry; Heard, John Frederick (编), Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30 30, University of Toronto: International Astronomical Union: 57, June 20–24, 1966, Bibcode:1967IAUS...30...57E.

[pourbaix2004-6] 6.0 ^6.1 Pourbaix, D.; et al, S_B⁹: The ninth catalogue of spectroscopic binary orbits, Astronomy and Astrophysics, 2004, 424 (2): 727–732, Bibcode:2004A&A...424..727P, S2CID 119387088, arXiv:astro-ph/0406573 , doi:10.1051/0004-6361:20041213.

[lang2006-7] 7.0 ^7.1 Lang, Kenneth R., Astrophysical formulae, Astronomy and astrophysics library 1 3rd, Birkhäuser, 2006 [2021-12-06], ISBN 3-540-29692-1, （原始内容存档于2019-05-20）. . The radius (R_*) is given by:
${\begin{aligned}2\cdot R_{*}&={\frac {(158.2\cdot 0.251\cdot 10^{-3})\ {\text{AU}}}{0.0046491\ {\text{AU}}/R_{\bigodot }}}\\&\approx 8.5\cdot R_{\bigodot }\end{aligned}}$

[Gies1992-8] 8.0 ^8.1 ^8.2 ^8.3 Gies, Douglas R.; Lambert, David L., Carbon, nitrogen, and oxygen abundances in early B-type stars, Astrophysical Journal, Part 1, March 1992, 387: 673–700, Bibcode:1992ApJ...387..673G, doi:10.1086/171116.

[Abt2002-9] 9.0 ^9.1 Abt, Helmut A.; et al, Rotational Velocities of B Stars, The Astrophysical Journal, July 2002, 573 (1): 359–365, Bibcode:2002ApJ...573..359A, doi:10.1086/340590 .

[SIMBAD-10] u. Ori. SIMBAD. 斯特拉斯堡天文资料中心.

[Eggleton2008-11] 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, S2CID 14878976, arXiv:0806.2878 , doi:10.1111/j.1365-2966.2008.13596.x.

[MarettCrosby2013-12] Marett-Crosby, Michael, Twenty-Five Astronomical Observations That Changed the World: And How To Make Them Yourself, The Patrick Moore Practical Astronomy Series, Springer Science & Business Media: 93, 2013 [2021-12-06], ISBN 978-1461468004, （原始内容存档于2021-12-06）.

[Zorec2009-13] Zorec, J.; et al, Fundamental parameters of B supergiants from the BCD system. I. Calibration of the (λ_1, D) parameters into T_eff, Astronomy and Astrophysics, July 2009, 501 (1): 297–320, Bibcode:2009A&A...501..297Z, S2CID 14969137, arXiv:0903.5134 , doi:10.1051/0004-6361/200811147.

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观测资料历元 J2000.0
水府一的位置(红圈)
星座	猎户座
星官	水府（参宿）
赤经	06^h 07^m 34.32588^s^[1]
赤纬	+14° 46′ 06.5061″^[1]
视星等（V）	4.42^[2]
特性
光谱分类	B3 V^[3] or B3 IV^[4]
U−B 色指数	−0.67^[2]
B−V 色指数	−0.18^[2]
天体测定

径向速度 (R_v)	+24.1^[5] km/s
自行 (μ)	赤经：+6.78^[1] mas/yr 赤纬：−20.23^[1] mas/yr
视差 (π)	6.32 ± 0.33^[1] mas
距离	520 ± 30 ly (158 ± 8 pc)

轨道^[6]
绕行周期 (P)	131.211 d
偏心率 (e)	0.64
近心点历元 (T)	2436475.852 JD
近心点幅角 (ω) (secondary)	6.6°
半振幅 (K₁) (primary)	33.3 km/s
详细资料
ν Ori A
质量	7000670000000000000♠6.7±0.1^[4] M_☉
半径	4.3^[7] R_☉
表面重力 (log g)	4.06^[8]
亮度	1,965^[3] L_☉
温度	17,880^[8] K
金属量 [Fe/H]	−0.05^[8] dex
自转速度 (v sin i)	30^[9] km/s
年龄	7001263000000000000♠26.3±5.3^[4] Myr

其他命名
ν Ori, 67 Orionis, BD+14° 1152, FK5 232, HD 41753, HIP 29038, HR 2159, SAO 95259.^[10]
参考资料库
SIMBAD	资料

查论编猎户座的恒星
拜耳命名	α β γ δ ε ζ η θ¹ (Trapezium Cluster) θ² ι κ λ (Meissa) μ ν ξ ο¹ ο² π¹ π² π³ π⁴ π⁵ π⁶ ρ σ τ υ φ¹ (Khad) φ² χ¹ χ² ψ ω
佛兰斯蒂德命名	5 6 11 13 14 15 16 18 21 22 23 25 27 29 37 40 67
HD星表	HD 34445 HD 37605 HD 290327（英语：HD 290327）
格利泽近星	葛利斯179 格利泽221 GJ 3379 格利泽205 格利泽213 GJ 9193
其他	12 26 31 32 33 35 36 38 42 45 49 51 52 55 56 57 59 60 63 64 65 66 68 69 71 72 73 74 75 WISE J0521+1025 G 99-47
列表

查论编星官水府包括的恒星
正星	水府一水府二水府三水府四
增星	水府增一水府增二水府增三水府增四水府增五水府增六水府增七水府增八