頓頑一

**頓頑一**
觀測資料; 曆元 J2000.0
星座	豺狼座
星官
赤經	15h 21m 48.36967s
赤緯	−36° 15′ 40.9525″
視星等（V）	3.58
特性
光譜分類	K5 III
U−B 色指數	+1.85
B−V 色指數	+1.53
天體測定
徑向速度 (Rv)	−29.4±0.7 km/s
自行 (μ)	赤經：−92.33 mas/yr ; 赤緯：−85.67 mas/yr
視差 (π)	11.86 ± 0.16 mas
距離	275 ± 4 ly ; (84 ± 1 pc)
絕對星等 (MV)	−1.55
詳細資料
半徑	52 R☉
溫度	3,894±59 K
其他命名
	φ1 Lup, CD−35° 10236, FK5 566, HD 136422, HIP 75177, HR 5705, SAO 206552.
參考資料庫
SIMBAD	資料

頓頑一（豺狼座φ1）是位於豺狼座的恆星，其視星等為3.57。

Quick Facts 觀測資料曆元 J2000.0, 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, Bibcode:2007A&A...474..653V, arXiv:0708.1752 , doi:10.1051/0004-6361:20078357.
[2]
Mermilliod, J.-C., Compilation of Eggen's UBV data, transformed to UBV (unpublished), Catalogue of Eggen's UBV data (SIMBAD), 1986, Bibcode:1986EgUBV........0M.
[3]
Houk, Nancy, Michigan catalogue of two-dimensional spectral types for the HD stars 3, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, 1979, Bibcode:1982MSS...C03....0H.
[4]
de Bruijne, J. H. J.; Eilers, A.-C., Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project, Astronomy & Astrophysics, October 2012, 546: 14, Bibcode:2012A&A...546A..61D, arXiv:1208.3048 , doi:10.1051/0004-6361/201219219, A61.
[5]
Ginestet, N.; et al, Magnitudes absolues des étoiles standards MK des types G à M à partir des parallaxes Hipparcos [The absolute magnitudes of the G to M type MK standards from the Hipparcos parallaxes], Astronomy and Astrophysics Supplement, February 2000, 142: 13−24, Bibcode:2000A&AS..142...13G, doi:10.1051/aas:2000135 （法語）.
[6]
Lang, Kenneth R., Astrophysical formulae, Astronomy and astrophysics library 1 3rd, Birkhäuser, 2006 [2018-02-23], ISBN 3-540-29692-1, （原始內容存檔於2023-07-28）. The radius (R_*) is given by:
${\begin{aligned}2\cdot R_{*}&={\frac {(84.3\cdot 5.69\cdot 10^{-3})\ {\text{AU}}}{0.0046491\ {\text{AU}}/R_{\bigodot }}}\\&\approx 103\cdot R_{\bigodot }\end{aligned}}$
[7]
Strassmeier, K. G.; Schordan, P., A temperature calibration for MK-class III giants from high-resolution spectral line-depth ratios, Astronomische Nachrichten, 2000, 321 (5): 277−305, Bibcode:2000AN....321..277S, doi:10.1002/1521-3994(200012)321:5/6<277::AID-ASNA277>3.0.CO;2-H.
[8]
* phi01 Lup. SIMBAD. 斯特拉斯堡天文資料中心. [2017-03-10].

[vanLeeuwen2007-1] [1]
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]
Mermilliod, J.-C., Compilation of Eggen's UBV data, transformed to UBV (unpublished), Catalogue of Eggen's UBV data (SIMBAD), 1986, Bibcode:1986EgUBV........0M.

[houk1979-3] [3]
Houk, Nancy, Michigan catalogue of two-dimensional spectral types for the HD stars 3, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, 1979, Bibcode:1982MSS...C03....0H.

[deBruijne2012-4] [4]
de Bruijne, J. H. J.; Eilers, A.-C., Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project, Astronomy & Astrophysics, October 2012, 546: 14, Bibcode:2012A&A...546A..61D, arXiv:1208.3048 , doi:10.1051/0004-6361/201219219, A61.

[Ginestet2000-5] [5]
Ginestet, N.; et al, Magnitudes absolues des étoiles standards MK des types G à M à partir des parallaxes Hipparcos [The absolute magnitudes of the G to M type MK standards from the Hipparcos parallaxes], Astronomy and Astrophysics Supplement, February 2000, 142: 13−24, Bibcode:2000A&AS..142...13G, doi:10.1051/aas:2000135 （法語）.

[lang2006-6] [6]
Lang, Kenneth R., Astrophysical formulae, Astronomy and astrophysics library 1 3rd, Birkhäuser, 2006 [2018-02-23], ISBN 3-540-29692-1, （原始內容存檔於2023-07-28）. The radius (R_*) is given by:
${\begin{aligned}2\cdot R_{*}&={\frac {(84.3\cdot 5.69\cdot 10^{-3})\ {\text{AU}}}{0.0046491\ {\text{AU}}/R_{\bigodot }}}\\&\approx 103\cdot R_{\bigodot }\end{aligned}}$

[Strassmeier2000-7] [7]
Strassmeier, K. G.; Schordan, P., A temperature calibration for MK-class III giants from high-resolution spectral line-depth ratios, Astronomische Nachrichten, 2000, 321 (5): 277−305, Bibcode:2000AN....321..277S, doi:10.1002/1521-3994(200012)321:5/6<277::AID-ASNA277>3.0.CO;2-H.

[SIMBAD-8] [8]
* phi01 Lup. SIMBAD. 斯特拉斯堡天文資料中心. [2017-03-10].

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觀測資料曆元 J2000.0
星座	豺狼座
星官
赤經	15^h 21^m 48.36967^s^[1]
赤緯	−36° 15′ 40.9525″^[1]
視星等（V）	3.58^[2]
特性
光譜分類	K5 III^[3]
U−B 色指數	+1.85^[2]
B−V 色指數	+1.53^[2]
天體測定

徑向速度 (R_v)	2998706000000000000♠−29.4±0.7^[4] km/s
自行 (μ)	赤經：−92.33^[1] mas/yr 赤緯：−85.67^[1] mas/yr
視差 (π)	11.86 ± 0.16^[1] mas
距離	275 ± 4 ly (84 ± 1 pc)
絕對星等 (M_V)	−1.55^[5]

詳細資料

半徑	52^[6] R_☉
溫度	7003389400000000000♠3,894±59^[7] K

其他命名
φ¹ Lup, CD−35° 10236, FK5 566, HD 136422, HIP 75177, HR 5705, SAO 206552.^[8]
參考資料庫
SIMBAD	資料