NGC 2439
NGC 2439 | |
---|---|
NGC 2439 (taken from Stellarium) | |
Observation data (J2000 epoch) | |
Constellation | Puppis |
Right ascension | 07h 40.8m[1] |
Declination | −31° 41′[1] |
Distance | 3.855 kpc (12.57 kly)[2] |
Apparent magnitude (V) | 6.9[1] |
Apparent dimensions (V) | 10″[3] |
Physical characteristics | |
Other designations | C 0738-315[1] |
NGC 2439 is an open cluster of stars in the constellation Puppis. It has an apparent magnitude of 6.9, an angular size of 10 arcminutes and is visible using a small telescope.[3] This cluster is about 3.855 kpc from the Solar System and has an age of about 10 million years.[2][4] Observationally, this cluster is along the line of sight of two groups of B-type supergiant stars. The nearer group is located at a distance of 1.03 kpc, while the second group is at 3.2 kpc.[5]
References
- 1 2 3 4 "NGC 2439 -- Open (galactic) Cluster". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2011-04-07.
- 1 2 Piskunov, A. E.; Schilbach, E.; Kharchenko, N. V.; Röser, S.; et al. (January 2008). "Tidal radii and masses of open clusters". Astronomy and Astrophysics. 477 (1): 165–172. Bibcode:2008A&A...477..165P. doi:10.1051/0004-6361:20078525. See online data.
- 1 2 Bakich, Michael E. (2010). 1001 Celestial Wonders to See Before You Die: The Best Sky Objects for Star Gazers. Patrick Moore's Practical Astronomy Series. Springer. p. 29. ISBN 1-4419-1776-4.
- ↑ Dias W.S.; Alessi B.S.; Moitinho A.; Lepine J.R.D. (July 2002). "New catalog of optically visible open clusters and candidates". Astronomy and Astrophysics. 389 (3): 871–873. arXiv:astro-ph/0203351. Bibcode:2002A&A...389..871D. doi:10.1051/0004-6361:20020668. Note: see the VizieR catalogue B/ocl.
- ↑ Kaltcheva, N. T.; Hilditch, R. W. (March 2000). "The distribution of bright OB stars in the Canis Major-Puppis-Vela region of the Milky Way". Monthly Notices of the Royal Astronomical Society. 312 (4): 753–768. Bibcode:2000MNRAS.312..753K. doi:10.1046/j.1365-8711.2000.03170.x.
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