NGC 2439
NGC 2439是位于船尾座的一个疏散星团。它的视星等为6.9等,大小为10弧分,使用小望远镜就能看见[3]。这个星团距离太阳系大约3,855秒差距,年龄大约1,000万地球年[2][4]。在观测上,这个星团有两颗B型星的超巨星。较靠近我们的一颗距离约为1,030秒差距,较远的一颗距离3,200秒差距[5]。
NGC 2439 | |
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观测资料 (J2000 历元) | |
星座 | 船尾座 |
赤经 | 07h 40.8m[1] |
赤纬 | −31° 41′[1] |
距离 | 3.855 kpc(12.57 kly)[2] |
视星等 (V) | 6.9[1] |
视大小 (V) | 10″[3] |
物理特征 | |
其他特征 | C 0738-315[1] |
参考资料
- ^ 1.0 1.1 1.2 1.3 NGC 2439 -- Open (galactic) Cluster. SIMBAD. Centre de Données astronomiques de Strasbourg. [2011-04-07]. (原始内容存档于2020-02-05).
- ^ 2.0 2.1 Piskunov, A. E.; Schilbach, E.; Kharchenko, N. V.; Röser, S.; et al. Tidal radii and masses of open clusters. Astronomy and Astrophysics. January 2008, 477 (1): 165–172. Bibcode:2008A&A...477..165P. doi:10.1051/0004-6361:20078525. See online data.
- ^ 3.0 3.1 Bakich, Michael E. 1001 Celestial Wonders to See Before You Die: The Best Sky Objects for Star Gazers. Patrick Moore's Practical Astronomy Series. Springer. 2010: 29. ISBN 978-1-4419-1776-8.
- ^ Dias W.S.; Alessi B.S.; Moitinho A.; Lepine J.R.D. New catalog of optically visible open clusters and candidates. Astronomy and Astrophysics. July 2002, 389 (3): 871–873. Bibcode:2002A&A...389..871D. arXiv:astro-ph/0203351 . doi:10.1051/0004-6361:20020668. Note: see the VizieR catalogue B/ocl (页面存档备份,存于互联网档案馆).
- ^ Kaltcheva, N. T.; Hilditch, R. W. The distribution of bright OB stars in the Canis Major-Puppis-Vela region of the Milky Way. Monthly Notices of the Royal Astronomical Society. March 2000, 312 (4): 753–768. Bibcode:2000MNRAS.312..753K. doi:10.1046/j.1365-8711.2000.03170.x.
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