NGC 2169

NGC 2169
Image showing the 37 asterism.
Observation data (J2000 epoch)
Right ascension06h 8.4m
Declination+13° 57′
Distance3.6 kly
Apparent magnitude (V)5.9
Apparent dimensions (V)6′
Physical characteristics
Other designations37 Cluster, Cr 38/83
Associations
ConstellationOrion
See also: Open cluster, List of open clusters
NGC 2169 location map

NGC 2169 is an open cluster of stars in the Constellation of Orion. It was possibly discovered by Giovanni Batista Hodierna before 1654 and independently discovered by William Herschel on October 15, 1784. NGC 2169 is at a distance of about 3,600 light years away from Earth. It is nicknamed "The '37' Cluster" due to its striking resemblance to the numerals "37". The cluster is composed of components Collinder 38, a I3pn open cluster, and Collinder 83, a III3m open cluster.

References

  1. 1 2 3 4 Finlay, Warren H. (2014). Concise Catalogue of Deep-Sky Objects. The Patrick Moore Practical Astronomy Series (2nd ed.). Springer Cham. p. 192. doi:10.1007/978-3-319-03170-5. ISBN 978-3-319-03169-9.
  2. ↑ O'Meara, Stephen James (2007). Deep Sky Companions: Hidden Treasures. Cambridge University Press. p. 180. ISBN 9780521837040.
  3. ↑ "Orion Constellation". Constellation Guide. Retrieved 2014-03-03.
  4. ↑ "Collinder 38". Backyard Astronomy for Amateur Astronomers. Archived from the original on 2016-04-14. Retrieved 2014-03-03.