ngc 2403 intermediate spiral galaxy in camelopardalis

ngc 2403 intermediate spiral galaxy in camelopardalis

NGC 2403 is an intermediate spiral galaxy in the constellation Camelopardalis. It has a H II nucleus.[3] It was discovered by William Herschel in 1788. NGC 2403 is an outlying member of the M81 Group,[2] and is approximately 8 million light-years distant. The northern spiral arm connects to NGC 2404.[2] It may be easily seen using 10 ? 50 binoculars.[2]

Supernovae

As of late 2004, there had been two reported supernovae in the galaxy: SN 1954J and SN 2004dj.

History

Allan Sandage detected Cepheid variables in NGC 2403 using the Hale telescope, making it the first galaxy beyond our local group to have Cepheids found in it.[2] He derived a distance of a mere 8 kly.[2] Today, it is thought to be a thousand times further away at about 8 Mly (3.6 Mpc).