HD 180262
HD 180262是在赤道星座天鹰座的一对宽距双星。 这一对角距离为89.823″[3]。
| 观测资料 历元 J2000 | |
|---|---|
| 星座 | 天鹰座 |
| 星官 | |
| 赤经 | 19h 15m 20.08999s[1] |
| 赤纬 | +15° 05′ 01.1456″[1] |
| 视星等（V） | 5.57[2] (5.75 + 7.69)[3] |
| 特性 | |
| 光谱分类 | G8II-III + A1V[3] |
| U−B 色指数 | +0.85[2] |
| B−V 色指数 | +1.10[2] |
| R−I 色指数 | 0.54 |
| 天体测定 | |
| 径向速度 (Rv) | −25.2[4] km/s |
| 自行 (μ) | 赤经：+0.55[1] mas/yr 赤纬：−11.10[1] mas/yr |
| 视差 (π) | 5.32 ± 0.9[1] mas |
| 距离 | approx. 600 ly (approx. 190 pc) |
| 详细资料 | |
| HD 180262 A | |
| 半径 | 50[5] R☉ |
| 表面重力 (log g) | 2.0[6] |
| 亮度 | 323[7] L☉ |
| 温度 | 4,308[8] K |
| 金属量 [Fe/H] | 0.21[8] dex |
| 自转速度 (v sin i) | 1.4[6] km/s |
| 其他命名 | |
| 参考数据库 | |
| SIMBAD | 资料 |
| 参考数据库 | |
| SIMBAD | 资料 |
参考资料
- ^ 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. S2CID 18759600. arXiv:0708.1752
. doi:10.1051/0004-6361:20078357.
- ^ 2.0 2.1 2.2 Mermilliod, J.-C., Compilation of Eggen's UBV data, transformed to UBV (unpublished), Catalogue of Eggen's UBV Data.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
- ^ 3.0 3.1 3.2 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
- ^ Gontcharov, G. A. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system. Astronomy Letters. November 2006, 32 (11): 759–771. Bibcode:2006AstL...32..759G. S2CID 119231169. arXiv:1606.08053 . doi:10.1134/S1063773706110065.
- ^ Pasinetti Fracassini, L. E.; et al, Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics, Astronomy and Astrophysics, February 2001, 367 (2): 521–524, Bibcode:2001A&A...367..521P, S2CID 425754, arXiv:astro-ph/0012289 , doi:10.1051/0004-6361:20000451
- ^ 6.0 6.1 Lèbre, A.; de Laverny, P.; Do Nascimento, J. D. Jr.; de Medeiros, J. R., Lithium abundances and rotational behavior for bright giant stars, Astronomy and Astrophysics, May 2006, 450 (3): 1173–1179, Bibcode:2006A&A...450.1173L, doi:10.1051/0004-6361:20053485
- ^ McDonald, I.; et al, Fundamental Parameters and Infrared Excesses of Hipparcos Stars, Monthly Notices of the Royal Astronomical Society, 2012, 427 (1): 343–57, Bibcode:2012MNRAS.427..343M, S2CID 118665352, arXiv:1208.2037 , doi:10.1111/j.1365-2966.2012.21873.x
- ^ 8.0 8.1 Greenstein, Jesse L.; Keenan, Philip C., Abundances of Metals, CN, and CH in Giant Stars, Astrophysical Journal, January 1958, 127: 172, Bibcode:1958ApJ...127..172G, doi:10.1086/146449
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