NGC 2509 is an open cluster in the constellation of Puppis. It was discovered on 3 December 1783 by William Herschel. It was described as "bright, pretty...

marginally studied open clusters Collinder 74, Berkeley 27, Haffner 8, NGC 2509, and VdB-Hagen 4". Astronomy and Astrophysics. 464 (2): 573–580. arXiv:astro-ph/0611705...

doi:10.1086/498708. ISSN 0004-6256. S2CID 18913331. "NED results for object NGC 2509". National Aeronautics and Space Administration / Infrared Processing and...

NGC 2903 is an isolated barred spiral galaxy in the equatorial constellation of Leo, positioned about 1.5° due south of Lambda Leonis. It was discovered...

2020-06-26. "ngc 1857". sim-id. Retrieved 2020-06-26. "ngc 2192". sim-id. Retrieved 2020-06-26. "ngc 2215". sim-id. Retrieved 2020-06-26. "ngc 2243". sim-id...

II Program. The catalogue contains 400 objects. All objects are from the NGC. All objects are visible in mid northern latitudes, since they were all observed...

Embedded within Messier 24. Associated with Messier 17. Associated with NGC 6820. Embedded within the Iris Nebula. There are some errors in Collinder's...

NGC 2800, also known as PGC 26302, is an elliptical galaxy in the constellation Ursa Major. It was discovered February 17, 1831 by William Herschel. Skrutskie...

NGC 2950 is a lenticular galaxy in the northern constellation of Ursa Major, about 50 million light years from the Milky Way and receding with a heliocentric...

584 (7819): 87–92. Bibcode:2020Natur.584...87A. doi:10.1038/s41586-020-2509-0. ISSN 1476-4687. PMID 32699412. S2CID 220697089. Retrieved 18 August 2020...