NGC 1634: Cluster with Nebula

NGC 1624: Star cluster with H-II region in Perseus; 500 mm Cassegrain f/7.2; SBIG STL11K; 240-50-50-50 min LRGB; Bernese Highlands; © 2017 Radek Chromik


NGC 1624 was discovered on 28th December 1790 by the German-British astronomer William Herschel with his self-made 18.7 "f / 12.8 reflector telescope in Slough, England. [196, 277]

Physical Properties

This is a young star cluster, embedded in the H-II nebula Sh2-212, which surrounds the star cluster like a shell. The age is estimated to be around four million years. The cluster consists of several massive main sequence stars and a large number of pre-main sequence stars. The brightest star is NGC 1624-2 near the center of the cluster. This star is the source of strong X-rays and rotates with a very strong magnetic field. About a fifth of the pre-main sequence stars are surrounded by dust disks. The cluster lies in the direction of the galactic anti-center at a distance of 6.0 ± 0.6 kpc. [445]

Revised+Historic NGC/IC, Version 22/9, © Dr. Wolfgang Steinicke [277]
DesignationNGC 1624
TypeOCL (I2pn)
Right Ascension (J2000.0)04h 40m 36.4s
Declination (J2000.0)+50° 27' 42"
Diameter3 arcmin
Visual magnitude11.8 mag
Metric Distance6.025 kpc
Dreyer DescriptionF, cL, iF, 6 or 7 st + neb
Identification, RemarksOCL 403, LBN 722, Ced 37, S 212

Finder Chart

The star cluster with H-II nebula is located in the constellation Perseus. The best time to observe is September to February, when it is highest at night.

Finder Chart NGC 1634: Cluster with Nebula
NGC 1634: Cluster with Nebula in constellation Perseus. Charts created using SkySafari 6 Pro and STScI Digitized Sky Survey. Limiting magnitudes: Constellation chart ~6.5 mag, DSS2 close-ups ~20 mag. [149, 160]

Visual Observation

Description pending ...

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