NGC 1624

NGC 1624, also known as Sh 2-212^[3] in the Sharpless catalog, is a very young open cluster in the constellation Perseus inside an emission nebula. It was discovered by German-British astronomer William Herschel in 1790.^[4] Together with Sh 2-211, this nebula is part of the Tribble Nebulae.^[5]NGC 1624 is about 20,000 ly (6,000 pc) from Earth, and latest estimates give it an age of less than 4 million years.^[2] Its apparent magnitude is 11.8,^[1] and apparent diameter is about 3.0 arc minutes.^[4] Its celestial location is right ascension (α) 04^h 40^m 36.0^s and declination (δ) +50° 27′ 42″.^[1] It is potentially an area of massive star formation.^[6]

Rightascension04^h 40^m 36.0^s[1]

Declination+50° 27′ 42″^[1]

Distance20000 ± 2000 ly (6000 ± 600 pc^[2])

Apparent magnitude(V)11.8^[1]

Quick facts Observation data (J2000 epoch), Right ascension ...

NGC 1624
Image of NGC 1624 with the Isaac Newton Telescope Credit: IGAPS
Observation data (J2000 epoch)
Right ascension	04h 40m 36.0s[1]
Declination	+50° 27′ 42″[1]
Distance	20000 ± 2000 ly (6000 ± 600 pc[2])
Apparent magnitude (V)	11.8[1]
Physical characteristics
Estimated age	<4 Myr[2]
Other designations	Cr 53, C 0436+503, OCl 403, Tribble Nebula, Little Cocoon Nebula
Associations
Constellation	Perseus
See also: Open cluster, List of open clusters

Close

According to Robert Trumpler's classification of open clusters, this cluster contains fewer than 50 stars (letter p) with a high concentration (I) and whose magnitudes are distributed over an average interval (number 2). The letter n at the end (I2pn) means that the cluster is inside a nebula.