NGC 2451

NGC 2451
NGC 2451 (taken from Stellarium)
Observation data (J2000 epoch)
Right ascension07h 45m 24.0s
Declination−37° 57′ 00″
Distance600 ly (NGC 2451A), 1,200 ly (NGC 2451B)
Apparent magnitude (V)2.8
Apparent dimensions (V)50′
Physical characteristics
Other designationsCr 161
Associations
ConstellationPuppis
See also: Open cluster, List of open clusters

NGC 2451 is an open cluster of stars in the constellation Puppis, 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.

References

  1. 1 2 3 4 Seligman, Courtney. "Celestial Atlas: NGC Objects: NGC 2450–2499". cseligman.com. Archived from the original on 1 January 2016. Retrieved 10 July 2015.
  2. 1 2 3 4 Finlay, Warren H. (2014). Concise Catalogue of Deep-Sky Objects. The Patrick Moore Practical Astronomy Series (2nd ed.). Springer Cham. p. 212. doi:10.1007/978-3-319-03170-5. ISBN 978-3-319-03169-9.
  3. ↑ Pöhnl, H.; Maitzen, H. M.; Paunzen, E. (April 2003). "On the evolutionary status of chemically peculiar stars of the upper main sequence". Astronomy and Astrophysics. 402: 247–252. arXiv:astro-ph/0303189. Bibcode:2003A&A...402..247P. doi:10.1051/0004-6361:20030266. S2CID 7215863.