NGC 2451
Open cluster in the constellation Puppis
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NGC 2451 is an open cluster of stars in the Puppis constellation,[2] probably discovered by Giovanni Battista Hodierna before 1654 and John Herschel in 1835.[1] In 1994, it was postulated that this was actually two open clusters that lie along the same line of sight. This was confirmed in 1996. The respective clusters are labeled NGC 2451 A and NGC 2451 B, and they are located at distances of 600 and 1,200 light-years, respectively.[3]
| NGC 2451 | |
|---|---|
NGC 2451 (taken from Stellarium) | |
| Observation data (J2000 epoch) | |
| Right ascension | 07h 45m 24.0s[1] |
| Declination | −37° 57′ 00″[1] |
| Distance | 600 ly (NGC 2451A), 1,200 ly (NGC 2451B)[1] |
| Apparent magnitude (V) | 2.8[2] |
| Apparent dimensions (V) | 50′[2] |
| Physical characteristics | |
| Other designations | Cr 161 |
| Associations | |
| Constellation | Puppis[2] |
