File:M50_Open_Star_Cluster.png · Wikimedia Commons · See Wikimedia Commons
Messier 50 is a collection of hundreds of young stars held together by gravity, located about 3,000 light-years away in the constellation Monoceros. It's a useful object for astronomers to study because it helps them understand how stars form and evolve together in groups.
AI-generated from the Wikipedia summary — may contain errors.
Wikidata facts
- Distance from Earth
- 881
- Radius
- 10
- Image
- M50a.jpg
Show 12 more facts
- catalog code
- [KPS2012] MWSC 1072
- Commons category
- Messier 50
- Commons gallery
- Messier 50
- time of discovery or invention
- 1711-00-00
- apparent magnitude
- 5.9
- spectral class
- II
- radial velocity
- 11.55
- declination
- -8.33778
- right ascension
- 105.69792
- parallax
- 1.0012
- right ascension component of proper motion
- -0.7977
- declination component of proper motion
- -0.6540
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Article
Messier 50 or M 50, also known as NGC 2323 or the Heart-shaped Cluster, is an open cluster of stars in the constellation Monoceros. It was recorded by G. D. Cassini before 1711 and independently discovered by Charles Messier in 1772 while observing Biela's Comet. It is sometimes described as a 'heart-shaped' figure or a blunt arrowhead.
M50 is about 2,900 light-years away from Earth and is near to but narrowly not estimated to be gravitationally tied to the Canis Major (CMa) OB1 association. It has a core radius of 5.9 ly (1.8 pc) and spans 17.8 ly (5.46 pc). The cluster has 508 confirmed and 109 probable members – their combined mass is more than 285 M☉, the mean stellar density would thus be 1.3 stars per cubic parsec. It is around 140 million years old, with two high-mass white dwarfs and two chemically peculiar stars.