NGC 1624


NGC 1624, also known as Sh2-212[3] in the Sharpless catalog, is a very young open cluster located in the constellation Perseus inside an emission nebula. It was discovered by the German-British astronomer William Herschel in 1790.[4] NGC 1624 is located at about 20,000 ly (6,000 pc) away and the latest estimates give an age of less than 4 million years.[2] The apparent magnitude is 11.8,[1] and apparent diameter is about 3.0 arc minutes.[4] Its celestial location is right ascension (α) 04h 40m 36.0s and declination (δ) +50° 27′ 42″.[1] It is potentially an area of massive star formation.[5]

NGC 1624
NGC 1624 DSS.jpg
Image of NGC 1624
Credit: DSS
Observation data (J2000 epoch)
Right ascension04h 40m 36.0s[1]
Declination+50° 27′ 42″[1]
Distance20000 ± 2000 ly (6000 ± 600 pc[2])
Apparent magnitude (V)11.8[1]
Physical characteristics
Estimated age<4 Myr[2]
Other designationsCr 53, C 0436+503, OCl 403, Tribble Nebula
See also: Open cluster, List of open clusters

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.

The Tribble Nebulae in Perseus, Sh2-211 and Sh2-212
The Tribble Nebulae in Perseus, Sh2-211 and Sh2-212

Along with nearby emission nebula Sh2-211[6] it makes up what has become known as the Tribble Nebulae,[7] so called because they look like the furry creatures first introduced in Star Trek: The Trouble with Tribbles.


  1. ^ a b c d e "NGC 1624". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 9 November 2017.
  2. ^ a b c "Sejong Open Cluster Survey (SOS) - IV. The Young Open Clusters NGC 1624 and NGC 1931". SIMBAD. Centre de données astronomiques de Strasbourg.
  3. ^ "Sh2-212". Galaxy Map. Retrieved 16 November 2021.
  4. ^ a b Seligman, Courtney. "New General Catalogue objects: NGC 1600 - 1649". Retrieved 9 November 2017.
  5. ^ "Triggered massive-star formation on the borders of Galactic HII regions. IV- Star formation at the periphery of Sh2-212". Retrieved 16 November 2021.
  6. ^ "Sh2-211". Galaxy Map. Retrieved 16 November 2021.
  7. ^ "Tribble Nebulae". Flickr. Retrieved 16 November 2021.

External linksEdit

  •   Media related to NGC 1624 at Wikimedia Commons
  • NGC 1624
  • NGC 1624
  • Sh2-211
  • Sh2-212

Coordinates:   04h 40m 36s, +50° 27′ 42″