|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 known as the Sprinter.
- Description 1
- References 2
- Bibliography 3
- External links 4
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.
- 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.
- Burnham, Robert. Burnham's Celestial Handbook. Dover, 1978. ISBN 0-486-23567-X.
- NGC 2516 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images