NGC 2451
NGC 2451 is an open cluster in the Puppis constellation, probably discovered by Giovanni Battista Hodierna before 1654 and John Herschel in 1835. 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.
| NGC 2451 | |
|---|---|
NGC 2451 (taken from Stellarium) | |
| Observation data (J2000 epoch) | |
| Right ascension | 07h 45m 24.0s |
| Declination | −37° 57′ 00″ |
| Distance | 600 ly (NGC 2451A), 1,200 ly (NGC 2451B) |
| Apparent magnitude (V) | 3 |
| Apparent dimensions (V) | 45″ |
| Physical characteristics | |
| Other designations | Cr 161 |
| Associations | |
| Constellation | Puppis |
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