NGC 7253
NGC 7253 is a pair of spiral galaxies in the constellation Pegasus. It was discovered by the German-British astronomer Albert Marth on 9 September 1863. It is listed in Halton Arp's Atlas of Peculiar Galaxies as Arp278, as an example of gravitationally interacting galaxies.
Of the pair, the galaxy to the north is known individually as NGC7253A. Its velocity relative to the cosmic [microwave background] is 4,235 ± 24km/s, which corresponds to a Hubble distance of 62.5 ± 4.4Mpc. The other galaxy in the pair is known individually as NGC7253B. Its velocity relative to the cosmic microwave background is 4,165 ± 24km/s, which corresponds to a Hubble distance of 61.4 ± 4.3Mpc.
With a surface brightness equal to 14.06 Mag/arcsec2, NGC7253B can be described as a low surface brightness galaxy.
According to the Simbad database, NGC7253 is a candidate for the title of active galaxy nucleus.
One supernova has been observed in NGC7253B: SN2002jg was discovered by Mike Schwartz and LOTOSS on 23 November 2002.