天市右垣四

**天市右垣四**
觀測資料; 曆元 J2000
星座	巨蛇座
星官
赤經	15h 56m 27.18269s
赤緯	+15° 39′ 41.8206″
視星等（V）	3.85
特性
光譜分類	F6 V
U−B 色指數	-0.03
B−V 色指數	+0.48
天體測定
徑向速度 (Rv)	6.78 ± 0.09 km/s
自行 (μ)	赤經：310.93 ± 0.20 mas/yr ; 赤緯：-1282.19 ± 0.18 mas/yr
視差 (π)	89.565 ± 0.18 mas
距離	36.42 ± 0.07 ly ; (11.17 ± 0.02 pc)
絕對星等 (MV)	3.60
詳細資料
質量	1.30 ± 0.15 M☉
半徑	1.55 ± 0.05 R☉
表面重力 (log g)	4.23
亮度	3.02 ± 0.09 L☉
溫度	6,350 ± 310 K
金屬量 [Fe/H]	−0.19 dex
自轉速度 (v sin i)	10.2 km/s
年齡	3.49 Gyr
其他命名
	Ainalhai, 41 Serpentis, BD+16° 2849, FK5 591, GCTP 3604.00, HD 142860, HIP 78072, HR 5933, LHS 408, SAO 101826.
參考資料庫
SIMBAD	資料

天市右垣四（巨蛇座γ）也稱鄭，是位於巨蛇座的恆星，其視星等為3.85^[2]。

Quick Facts 觀測資料曆元 J2000, 特性 ...

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參考文獻

[1]
van Leeuwen, F. Validation of the new Hipparcos reduction. Astronomy and Astrophysics. 2007, 474 (2): 653–664 [2018-02-26]. Bibcode:2007A&A...474..653V. arXiv:0708.1752 . doi:10.1051/0004-6361:20078357. （原始內容存檔於2016-04-02）. Vizier catalog entry （頁面存檔備份，存於互聯網檔案館）
[2]
Malagnini, M. L.; Morossi, C., Accurate absolute luminosities, effective temperatures, radii, masses and surface gravities for a selected sample of field stars, Astronomy and Astrophysics Supplement Series, November 1990, 85 (3): 1015–1019, Bibcode:1990A&AS...85.1015M
[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Mermilliod, J.-C., Compilation of Eggen's UBV data, transformed to UBV (unpublished), Catalogue of Eggen's UBV data.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.
[4]
Nidever, David L.; et al, Radial Velocities for 889 Late-Type Stars, The Astrophysical Journal Supplement Series, August 2002, 141 (2): 503–522, Bibcode:2002ApJS..141..503N, arXiv:astro-ph/0112477 , doi:10.1086/340570.
[5]
Holmberg, J.; et al, The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics, Astronomy and Astrophysics, July 2009, 501 (3): 941–947, Bibcode:2009A&A...501..941H, arXiv:0811.3982 , doi:10.1051/0004-6361/200811191.
[6]
Bruntt, H.; et al, Accurate fundamental parameters for 23 bright solar-type stars, Monthly Notices of the Royal Astronomical Society, July 2010, 405 (3): 1907–1923, Bibcode:2010MNRAS.405.1907B, arXiv:1002.4268 , doi:10.1111/j.1365-2966.2010.16575.x
[7]
Vican, Laura, Age Determination for 346 Nearby Stars in the Herschel DEBRIS Survey, The Astronomical Journal, June 2012, 143 (6): 135, Bibcode:2012AJ....143..135V, arXiv:1203.1966 , doi:10.1088/0004-6256/143/6/135.
[8]
* gam Ser. SIMBAD. 斯特拉斯堡天文資料中心. [2007-01-23].

外部連結

Gamma Serpentis by Professor Jim Kaler.

[van_Leeuwen2007-1] [1]
van Leeuwen, F. Validation of the new Hipparcos reduction. Astronomy and Astrophysics. 2007, 474 (2): 653–664 [2018-02-26]. Bibcode:2007A&A...474..653V. arXiv:0708.1752 . doi:10.1051/0004-6361:20078357. （原始內容存檔於2016-04-02）. Vizier catalog entry （頁面存檔備份，存於互聯網檔案館）

[aass85_3_1015-2] [2]
Malagnini, M. L.; Morossi, C., Accurate absolute luminosities, effective temperatures, radii, masses and surface gravities for a selected sample of field stars, Astronomy and Astrophysics Supplement Series, November 1990, 85 (3): 1015–1019, Bibcode:1990A&AS...85.1015M

[MERMILLIOD-3] [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.

[APJSS141-4] [4]
Nidever, David L.; et al, Radial Velocities for 889 Late-Type Stars, The Astrophysical Journal Supplement Series, August 2002, 141 (2): 503–522, Bibcode:2002ApJS..141..503N, arXiv:astro-ph/0112477 , doi:10.1086/340570.

[Holmberg2009-5] [5]
Holmberg, J.; et al, The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics, Astronomy and Astrophysics, July 2009, 501 (3): 941–947, Bibcode:2009A&A...501..941H, arXiv:0811.3982 , doi:10.1051/0004-6361/200811191.

[mnras405_3_1907-6] [6]
Bruntt, H.; et al, Accurate fundamental parameters for 23 bright solar-type stars, Monthly Notices of the Royal Astronomical Society, July 2010, 405 (3): 1907–1923, Bibcode:2010MNRAS.405.1907B, arXiv:1002.4268 , doi:10.1111/j.1365-2966.2010.16575.x

[aj143_6_135-7] [7]
Vican, Laura, Age Determination for 346 Nearby Stars in the Herschel DEBRIS Survey, The Astronomical Journal, June 2012, 143 (6): 135, Bibcode:2012AJ....143..135V, arXiv:1203.1966 , doi:10.1088/0004-6256/143/6/135.

[SIMBAD-8] [8]
* gam Ser. SIMBAD. 斯特拉斯堡天文資料中心. [2007-01-23].

[2]

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觀測資料曆元 J2000
星座	巨蛇座
星官
赤經	15^h 56^m 27.18269^s^[1]
赤緯	+15° 39′ 41.8206″^[1]
視星等（V）	3.85^[2]
特性
光譜分類	F6 V^[2]
U−B 色指數	-0.03^[3]
B−V 色指數	+0.48^[2]
天體測定

徑向速度 (R_v)	6.78 ± 0.09^[4] km/s
自行 (μ)	赤經：310.93 ± 0.20^[1] mas/yr 赤緯：-1282.19 ± 0.18^[1] mas/yr
視差 (π)	89.565 ± 0.18^[1] mas
距離	36.42 ± 0.07 ly (11.17 ± 0.02 pc)
絕對星等 (M_V)	3.60^[5]

詳細資料

質量	1.30 ± 0.15^[6] M_☉
半徑	1.55 ± 0.05^[6] R_☉
表面重力 (log g)	4.23^[2]
亮度	3.02 ± 0.09^[6] L_☉
溫度	6,350 ± 310^[2] K
金屬量 [Fe/H]	−0.19^[6] dex
自轉速度 (v sin i)	10.2^[6] km/s
年齡	3.49^[7] Gyr

其他命名
Ainalhai, 41 Serpentis, BD+16° 2849, FK5 591, GCTP 3604.00, HD 142860, HIP 78072, HR 5933, LHS 408, SAO 101826.^[8]
參考資料庫
SIMBAD	資料