Alpha Persei Cluster

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Alpha Persei Cluster
Observation data (2000.0 epoch)
Constellation	Perseus
Right ascension	03h 22m:
Declination	+49° 0′:
Distance	600 ly ()
Apparent magnitude (V)	1.2
Apparent dimensions (V)	185'
Other designations	Cr 39, Mel 20
See also: Open cluster, List of open clusters

The Alpha Persei Cluster, also known as Melotte 20 or Collinder 39, is an open cluster of stars in the constellation Perseus. It consists of several stars of spectral types O and B in the vicinity of Alpha Persei and is visible to the naked eye. Brightest members include Alpha, Delta, Epsilon, Psi, 29, 30, 34 and 48 Persei.

[edit] External links

• Alpha Persei Moving Cluster, Mel 20
• The Alpha Persei Cluster (Mel 20)
• Spectral types in the Alpha Persei Cluster