NGC 2451 is an open cluster in the Puppis constellation, 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.[2]
| NGC 2451 | |
|---|---|
NGC 2451 (taken from Stellarium) | |
| Observation data (J2000 epoch) | |
| Constellation | Puppis |
| 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) | 3[1] |
| Apparent dimensions (V) | 45″[1] |
| Physical characteristics | |
| Other designations | Cr 161 |
| See also: Open cluster, List of open clusters | |
| |
|---|---|
| NGC |
|
| Collinder |
|
New General Catalogue 2000 to 2499 | |
|---|---|
| |