NGC1643 is a peculiar barred spiral galaxy in the constellation of Eridanus. Its velocity with respect to the cosmic microwave background is , which corresponds to a Hubble distance of . It was discovered by German-British astronomer William Herschel on 28 November 1786.
Supernovae Two supernovae have been observed in NGC 1643: SN1995G (TypeIIn, mag. 15.5) was discovered by Robert Evans, J. Shobbrook, and S. Beaman, on 23 February 1995. SN1999et (TypeII, mag. 17.6) was discovered by E. Cappellaro on 4 November 1999.
See also List of NGC objects (1001–2000)
References
External links