维基百科
HD 4628
HD 4628，又名BD+04 123，SAO 109471、HR 222，是一颗位於雙魚座的恒星[10]，视星等为5.75，位于銀經121.49，銀緯-57.57，其B1900.0坐标为赤經0h 43m 8.2s，赤緯+4° -57.57′ 0″。
| 觀測資料 曆元 J2000 | |
|---|---|
| 星座 | 雙魚座 |
| 星官 | |
| 赤經 | 00h 48m 22.97634s[1] |
| 赤緯 | +05° 16′ 50.2096″[1] |
| 視星等（V） | 5.74[2] |
| 特性 | |
| 光谱分类 | K2.5 V[3] |
| U−B 色指数 | +0.60[3] |
| B−V 色指数 | +0.89[3] |
| 天体测定 | |
| 徑向速度 (Rv) | −10.41±0.15[1] km/s |
| 自行 (μ) | 赤经：755.561[1] mas/yr 赤纬：−1,141.745[1] mas/yr |
| 视差 (π) | 134.4948 ± 0.0578[4] mas |
| 距离 | 24.25 ± 0.01 ly (7.435 ± 0.003 pc) |
| 绝对星等 (MV) | 6.37[5] |
| 詳細資料 | |
| 質量 | 0.70±0.10[6] M☉ |
| 半徑 | 0.749±0.051[7] R☉ |
| 表面重力 (log g) | 4.39±0.16[6] |
| 亮度 | 0.28[6] L☉ |
| 溫度 | 5,055±40[6] K |
| 金属量 [Fe/H] | –0.22[8] dex |
| 自轉 | 38.0 days[8] |
| 年齡 | 5.4[9] Gyr |
| 其他命名 | |
| 參考資料庫 | |
| SIMBAD | 资料 |
参考文献 编辑
- ^ 1.0 1.1 1.2 1.3 1.4 Brown, A. G. A.; Vallenari, A.; Prusti, T.; de Bruijne, J. H. J.; et al. Gaia Data Release 2. Summary of the contents and survey properties. Astronomy & Astrophysics. 2018. Bibcode:2018A&A...616A...1G. arXiv:1804.09365 . doi:10.1051/0004-6361/201833051. VizieR中此天体在盖亚望远镜第二批数据发布的记录
- ^ Mermilliod, J.-C., Compilation of Eggen's UBV data, transformed to UBV (unpublished), Catalogue of Eggen's UBV Data.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 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, S2CID 119476992, arXiv:astro-ph/0603770 , doi:10.1086/504637
- ^ Brown, A. G. A.; et al. Gaia Early Data Release 3: Summary of the contents and survey properties. Astronomy & Astrophysics. 2021, 649: A1. Bibcode:2021A&A...649A...1G. S2CID 227254300. arXiv:2012.01533 . doi:10.1051/0004-6361/202039657 . 已忽略未知参数
|collaboration=(帮助) (勘误: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR. - ^ 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, S2CID 118577511, arXiv:0811.3982 , doi:10.1051/0004-6361/200811191.
- ^ 6.0 6.1 6.2 6.3 Ghezzi, L.; et al, Stellar Parameters and Metallicities of Stars Hosting Jovian and Neptunian Mass Planets: A Possible Dependence of Planetary Mass on Metallicity, The Astrophysical Journal, September 2010, 720 (2): 1290–1302, Bibcode:2010ApJ...720.1290G, S2CID 118565025, arXiv:1007.2681 , doi:10.1088/0004-637X/720/2/1290
- ^ van Belle, Gerard T.; von Braun, Kaspar. Directly Determined Linear Radii and Effective Temperatures of Exoplanet Host Stars. The Astrophysical Journal. 2009, 694 (2): 1085–1098. Bibcode:2009ApJ...694.1085V. S2CID 18370219. arXiv:0901.1206 . doi:10.1088/0004-637X/694/2/1085.
- ^ 8.0 8.1 Maldonado, J.; et al, A spectroscopy study of nearby late-type stars, possible members of stellar kinematic groups, Astronomy and Astrophysics, October 2010, 521: A12, Bibcode:2010A&A...521A..12M, S2CID 119209183, arXiv:1007.1132 , doi:10.1051/0004-6361/201014948
- ^ Mamajek, Eric E.; Hillenbrand, Lynne A., Improved Age Estimation for Solar-Type Dwarfs Using Activity-Rotation Diagnostics, The Astrophysical Journal, November 2008, 687 (2): 1264–1293, Bibcode:2008ApJ...687.1264M, S2CID 27151456, arXiv:0807.1686 , doi:10.1086/591785
- ^ 10.0 10.1 HD 4628 -- High proper-motion Star, SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), [2016-07-15], （原始内容于2021-11-18）.