NGC 3746

NGC 3746 is a large barred spiral galaxy with a ring structure located in the Leo constellation. It is located 449 million light-years from the Solar System and has an approximate diameter of 45,000 light-years. NGC 3746 was discovered by Ralph Copeland on 9 February 1874 with subsequent observations made by Hermann Kobold, Lawrence Parsons and John Louis Emil Dreyer.
The luminosity class of NGC 3746 is II and it has a broad H II region with a recessed core.

Copeland Septet

NGC 3746 is a member of the Copeland Septet which comprises 7 galaxies discovered by Copeland in 1874. The other 6 members are NGC 3745, NGC 3748, NGC 3750, NGC 3751, NGC 3753, and NGC 3754. Together, they are known as Hickson 57 and Arp 320.

Two supernovae have been discovered in NGC 3746:

SN 2002ar was discovered by Dr W. D. Li from the University of California, Berkeley via unfiltered CCD images which was taken by the 0.8-m Katzman Automatic Imagining Telescope on 3 and 4 February 2002. It was located 3".3 east and 0".5 south of the nucleus.
SN 2005ba was discovered on 1 April 2005 by Norwegian scientists Arne Danielsen, Mikkel Steine, and Stale Kildahl via unfiltered images taken from a 'Celestron 14' reflector at Veggli, Norway. It was located 14".6 west and 4".0 north of the nucleus.