NGC 1980 explained

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]

Notes and References

1. Web site: NED results for object NGC 1980*. NED. 27 November 2017.
2. Web site: ngc 1980. 2020-06-07. sim-id.
3. Web site: The open cluster NGC 1980. In the Sky. 27 November 2017.
4. Web site: Object: NGC 1980 (*). SEDS. 27 November 2017.
5. Web site: NGc 1980. 2020-06-10. sim-id.
6. Book: O'Meara, Stephen James. 2007. Deep-Sky Companions: Hidden Treasures. Cambridge University Press. 155–157. 9780521837040.
7. Web site: NGC 1980 (= OCL 529), the ί Orionis Nebula. cseligman. 27 November 2017.
8. Web site: Star Cluster Near Orion Nebula Revealed in Telescope Views. Space.com. November 14, 2012. 27 November 2017.