Messier 50
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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... Wikipedia
Right ascension: 07h 02m 47.5s
Apparent magnitude (V): 5.9
Apparent dimensions (V): 16.0′
Constellation: Monoceros
Distance: 2,870 ly (881 pc)
Estimated age: 140 Myr
Mass: 285 M☉ M☉