Astronomy:NGC 1980
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Short description: Open cluster in the constellation Orion
| NGC 1980 | |
|---|---|
 DSS image of the open cluster NGC 1980, located on the southern tip of the Orion Nebula, and the nebula NGC 1982 (M43) located on its northern edge | |
| Observation data (J2000.0 epoch) | |
| Constellation | Orion |
| Right ascension | 05h 25m 26.0s[1] |
| Declination | −05° 54′ 36″[1] |
| Distance | 1793 ly[2] (550 pc[2]) |
| Apparent magnitude (V) | 2.5[3] |
| Apparent dimensions (V) | 14.00 x 14.0[4] |
| Physical characteristics | |
| Estimated age | 4.7 million |
| Other designations | Lower Sword,[5] Collinder 72, OCL 529, WH V 31 |
NGC 1980 (also known as OCL 529, Collinder 72 and The Lost Jewel of Orion[6]) is a young open cluster associated with an emission nebula in the constellation Orion. It was discovered by William Herschel on 31 January 1786.[7] Its apparent size is 14 × 14 arc minutes and it is located around the star Iota Orionis on the southern tip of the Orion constellation.[4][8]
Herschel made his first observation of the cluster which was called WH V 31 on 31 January 1786, but he possibly observed it during his studies of double stars on 20 September 1783.[7]
References
- ↑ 1.0 1.1 "NED results for object NGC 1980*". NED. http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=ngc+1980&img_stamp=YES.
- ↑ 2.0 2.1 "The open cluster NGC 1980". In the Sky. https://in-the-sky.org/data/object.php?id=NGC1980.
- ↑ "ngc 1980". http://sim-id/.[yes|permanent dead link|dead link}}]
- ↑ 4.0 4.1 "Object: NGC 1980 (*)". SEDS. http://spider.seds.org/ngc/revngcic.cgi?ngc1980.
- ↑ "NGc 1980". http://simbad.u-strasbg.fr/simbad/sim-id?Ident=NGc+1980&submit=submit+id.
- ↑ O'Meara, Stephen James (2007). Deep-Sky Companions: Hidden Treasures. Cambridge University Press. pp. 155–157. ISBN 9780521837040. https://books.google.com/books?isbn=113946373X.
- ↑ 7.0 7.1 "NGC 1980 (= OCL 529), the ί Orionis Nebula". cseligman. http://cseligman.com/text/atlas/ngc19a.htm#1980.
- ↑ "Star Cluster Near Orion Nebula Revealed in Telescope Views". Space.com. November 14, 2012. https://www.space.com/18464-orion-nebula-star-cluster.html.
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