Arp 271

Arp 271 is a pair of similarly sized interacting spiral galaxies, NGC 5426 and NGC 5427, in the constellation of Virgo. It is not certain whether the galaxies are going to eventually collide or not. They will continue interacting for tens of millions of years, creating new stars as a result of the mutual gravitational attraction between the galaxies, a pull seen in the bridge of stars already connecting the two. Located about 130 million light-years away, the Arp 271 pair is about 130,000 light-years across. It was originally discovered in 1785 by William Herschel. It is speculated, that the Milky Way will undergo a similar collision in about five billion years with the neighboring Andromeda Galaxy, which is currently located about 2.5 million light-years away.

Supernovae in NGC 5426

Two supernovae have been observed in NGC 5426:

SN 1991B was discovered by The Berkeley Automated Supernova Search on 11 January 1991.
SN 2009mz was discovered by Libert Monard on 26 December 2009.

Supernovae in NGC 5427

Two supernovae have been observed in NGC 5427:

SN 1976D was discovered by Richard A. Wade on 25 August 1976.
SN 2021pfs was discovered by the Automatic Learning for the Rapid Classification of Events on 9 June 2021.