| NGC 2539 | |
|---|---|
 NGC 2539 | |
| Observation data (J2000 epoch) | |
| Right ascension | 08h 10m 37s[1] |
| Declination | −12° 49′ 06″[1] |
| Distance | 4,440 ly (1,363 pc[2]) |
| Apparent magnitude (V) | 6.5 [1] |
| Apparent dimensions (V) | 15' |
| Physical characteristics | |
| Mass | 5,480[3] M☉ |
| Estimated age | 370 million years[2] |
| Other designations | Cr 176, Mel 83 |
| Associations | |
| Constellation | Puppis |
NGC 2539 is an open cluster in the constellation Puppis, located at the north edge of the constellation. It was discovered by William Herschel on January 31, 1785. It is a moderately rich cluster and with little central concentration, with Trumpler class II1m.
- ^ a b c "NGC 2539". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2015-06-19.
- ^ a b WEBDA: NGC 2539
- ^ Piskunov, A. E.; Schilbach, E.; Kharchenko, N. V.; Röser, S.; Scholz, R.-D. (6 November 2007). "Tidal radii and masses of open clusters". Astronomy & Astrophysics. 477 (1): 165–172. Bibcode:2008A&A...477..165P. doi:10.1051/0004-6361:20078525.