NGC 253 is a spiral galaxy in the constellation Sculptor.
NGC 253 is a starburst galaxy, which means that it is currently
undergoing a period of intense star formation. It is the brightest member of the Sculptor group
of galaxies, which is grouped around the South galactic pole. The Sculptor group is perhaps the nearest to our
Local
Group of galaxies.This Galaxy is also one of the brightest galaxies beyond the Local Group. NGC 253 is also known as the
Silver Coin Galaxy; and is also referred to as the
Sculptor Galaxy.
Yhis Galaxy was one of the major discoveries of
Caroline
Herschel, the sister of
William
Herschel. She discovered this
object on September 23, 1783 with "an excellent small Newtonian
Sweeper"
of 27 inches focal length and a power of 30 (William Herschel's
description),
and added it to her list as
No. 10.
William Herschel included it in
his catalog
as No. V.1.
One supernova has been discovered in this Galaxy up to now: SN 1940E, which
was
discovered by Fritz Zwicky 51"W 21"S of the galaxy's nucleus, and became
as
bright as 14.0 mag (announced in IAUC 848).
NGC 253 is approximately 8 million Light Years from Earth.