|Observation data (J2000.0 epoch)|
|Right ascension||7h 58m 20s|
|Apparent magnitude (V)||3.8|
|Apparent dimensions (V)||30.0′|
|Mass||105 to 106 M☉|
|Other designations||NGC 2516, C96|
NGC 2516 is an open star cluster in the southern sky in the constellation Carina discovered by Abbe Lacaille in 1751-1752. It is most commonly referred to as NGC 2516 but is also considered by some observers as the Southern Beehive or as the Sprinter.
This bright cluster itself is easily visible with the naked eye as a hazy patch, but is resolvable into stars using binoculars. It contains two 5th magnitude red giant stars and three main visual double stars: HJ 4027, HJ 4031 and I 29. A small telescope would be required to split the double stars, which are all pairs of 8-9 magnitude and 1-10 arcseconds separation.
NGC 2516 and the recently discovered nearby star cluster Mamajek 2 in Ophiuchus have similar age and metallicity. Recently, kinematic evidence was presented by E. Jilinksi and coauthors that suggests that these two stellar groups may have formed in the same star-forming complex some 135 million years ago.
- Weule, Genelle (2010). "Beginner's Guide to the Night Sky : Summer Sky Tour". abc.com. Retrieved 15 April 2016.
- Ventrudo, Brian (2009). "ESA's 'The "Southern Beehive" Cluster". americaspace.com. Retrieved 15 April 2016.
- Papadopoulos, Leonidas (2014). "ESA's 'Mission: Impossible' Sees First Light: Gaia Opens Her Eyes to the Galaxy « AmericaSpace". americaspace.com. Retrieved 13 June 2014.
- "Imaging the Southern Sky : An Amateur Astronomer’s Guide" Chadwick, S., Cooper, I., pg.viii, Pub. Springer (2012)
- Burnham (1978), Vol I p.458
- Jilinski, E.; Ortega, V.G.; de la Reza, R.; Drake, N.A.; et al. (2009). "Dynamical Evolution and Spectral Characteristics of the Stellar Group Mamajek 2". Astrophysical Journal. 691 (1): 212. Bibcode:2009ApJ...691..212J. doi:10.1088/0004-637X/691/1/212.