NGC 146 is a small open cluster in the constellation Cassiopeia. It was discovered by John Herschel in 1829 using his father's 18.7 inch reflecting telescope.[3]

This article includes a list of general references, but it lacks sufficient corresponding inline citations. (August 2016)

NGC 146
Location of NGC 146
Observation data (J2000 epoch)
Constellation	Cassiopeia
Right ascension	00h 33m 03.9s[1]
Declination	+63° 18′ 32″[1]
Distance	~10000 (~3000)
Apparent magnitude (V)	9.1[2]
Physical characteristics
Estimated age	<10 Myr
Other designations	Cr 5, OCl 299, C 0030+630[2]
See also: Open cluster, List of open clusters

Location

NGC 146 is fairly easy to locate in the sky, being half a degree away from the bright star Kappa Cassiopeiae. However, spotting the cluster itself is difficult because of its low apparent magnitude of 9.1. Its relatively high declination of about 63° means it is not visible for below 27° S. Its distance is estimated at about 3030 parsecs (9880 light years ),[4] but may be around 3500 pc (11000 ly) away.[5]

Characteristics

The cluster is at most 10 million years old, as there are numerous B-type main sequence stars and pre-main-sequence stars but relatively few evolved supergiants. Among its most massive stars are two Herbig Be stars.[5]

References

Further reading

• "The NGC/IC Project". Archived from the original on 2013-01-15. Retrieved 2016-08-02.

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