NGC 2090
NGC 2090 is a spiral galaxy located in the constellation Columba. Its velocity with respect to the cosmic microwave background is 994 ± 5km/s, which corresponds to a Hubble distance of. However, 51 non-redshift measurements give a distance of. It was discovered on 29 October 1826 by Scottish astronomer James Dunlop. NGC 2090 was studied to refine the Hubble constant to an accuracy within ±10%.