尾宿四

**尾宿四**
	尾宿四的位置(紅圈處)
觀測資料; 曆元 J2000
星座	天蠍座
星官
赤經	17h 12m 09.19565s
赤緯	–43° 14′ 21.0905″
視星等（V）	3.33
特性
光譜分類	F5 IV
U−B 色指數	+0.09
B−V 色指數	+0.41
天體測定
徑向速度 (Rv)	–27.0 km/s
自行 (μ)	赤經：+24.47 mas/yr ; 赤緯：–288.55 mas/yr
視差 (π)	44.39 ± 0.16 mas
距離	73.5 ± 0.3 ly ; (22.53 ± 0.08 pc)
絕對星等 (MV)	+1.58
詳細資料
質量	1.75 M☉
表面重力 (log g)	3.10
亮度	17.7 L☉
溫度	6,519 K
金屬量 [Fe/H]	0.05 dex
自轉速度 (v sin i)	150.0 km/s
年齡	1.1 Gyr
其他命名
	η Sco, CD-43 11485, FK5 638, GJ 657, HD 155203, HIP 84143, HR 6380, SAO 227707.
參考資料庫
SIMBAD	資料

尾宿四（天蠍座η）是一顆位於天蠍座的恆星，其視星等為3.33^[2]。

參考文獻

^ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 van Leeuwen, F., Validation of the new Hipparcos reduction, Astronomy and Astrophysics, November 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 Bok, B. J.; Bok, P. F.; Miller, E. W., Photometric standards for the southern hemisphere. II, Astronomical Journal, November 1972, 77: 733, Bibcode:1972AJ.....77..733B, doi:10.1086/111346
^ ^3.0 ^3.1 ^3.2 Gray, R. O.; et al, 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
^ Evans, D. S., Batten, Alan Henry; Heard, John Frederick , 編, The Revision of the General Catalogue of Radial Velocities, University of Toronto: International Astronomical Union, June 20–24, 1966 [2009-09-10], （原始內容存檔於2019-06-26） |booktitle=被忽略 (幫助)
^ ^5.0 ^5.1 ^5.2 Holmberg, J.; Nordstrom, B.; Andersen, J. 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.
^ ^6.0 ^6.1 ^6.2 Mallik, Sushma V.; Parthasarathy, M.; Pati, A. K., Lithium and rotation in F and G dwarfs and subgiants, Astronomy and Astrophysics, October 2003, 409: 251–261, Bibcode:2003A&A...409..251M, doi:10.1051/0004-6361:20031084
^ LTT 6848 -- High proper-motion Star, SIMBAD (Centre de Données astronomiques de Strasbourg), [2012-02-10], （原始內容存檔於2020-11-05）

[aaa474_2_653-1] 1.0 ^1.1 ^1.2 ^1.3 ^1.4 van Leeuwen, F., Validation of the new Hipparcos reduction, Astronomy and Astrophysics, November 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, arXiv:0708.1752  , doi:10.1051/0004-6361:20078357

[aj77_733-2] 2.0 ^2.1 ^2.2 ^2.3 Bok, B. J.; Bok, P. F.; Miller, E. W., Photometric standards for the southern hemisphere. II, Astronomical Journal, November 1972, 77: 733, Bibcode:1972AJ.....77..733B, doi:10.1086/111346

[aj132_1_161-3] 3.0 ^3.1 ^3.2 Gray, R. O.; et al, 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

[rgcrv-4] Evans, D. S., Batten, Alan Henry; Heard, John Frederick , 編, The Revision of the General Catalogue of Radial Velocities, University of Toronto: International Astronomical Union, June 20–24, 1966 [2009-09-10], （原始內容存檔於2019-06-26） |booktitle=被忽略 (幫助)

[aaa501_3_941-5] 5.0 ^5.1 ^5.2 Holmberg, J.; Nordstrom, B.; Andersen, J. 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.

[aaa409_251-6] 6.0 ^6.1 ^6.2 Mallik, Sushma V.; Parthasarathy, M.; Pati, A. K., Lithium and rotation in F and G dwarfs and subgiants, Astronomy and Astrophysics, October 2003, 409: 251–261, Bibcode:2003A&A...409..251M, doi:10.1051/0004-6361:20031084

[SIMBAD-7] LTT 6848 -- High proper-motion Star, SIMBAD (Centre de Données astronomiques de Strasbourg), [2012-02-10], （原始內容存檔於2020-11-05）

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觀測資料曆元 J2000
尾宿四的位置(紅圈處)
星座	天蠍座
星官
赤經	17^h 12^m 09.19565^s^[1]
赤緯	–43° 14′ 21.0905″^[1]
視星等（V）	3.33^[2]
特性
光譜分類	F5 IV^[3]
U−B 色指數	+0.09^[2]
B−V 色指數	+0.41^[2]
天體測定

徑向速度 (R_v)	–27.0^[4] km/s
自行 (μ)	赤經：+24.47^[1] mas/yr 赤緯：–288.55^[1] mas/yr
視差 (π)	44.39 ± 0.16^[1] mas
距離	73.5 ± 0.3 ly (22.53 ± 0.08 pc)
絕對星等 (M_V)	+1.58^[5]

詳細資料

質量	1.75^[6] M_☉
表面重力 (log g)	3.10^[3]
亮度	17.7^[6] L_☉
溫度	6,519^[3] K
金屬量 [Fe/H]	0.05^[5] dex
自轉速度 (v sin i)	150.0^[6] km/s
年齡	1.1^[5] Gyr

其他命名
η Sco, CD-43 11485, FK5 638, GJ 657, HD 155203, HIP 84143, HR 6380, SAO 227707.^[7]
參考資料庫
SIMBAD	資料