NGC 7003 is a
spiral galaxy
Spiral galaxies form a class of galaxy originally described by Edwin Hubble in his 1936 work ''The Realm of the Nebulae''[light-year
A light-year, alternatively spelled light year, is a large unit of length used to express astronomical distances and is equivalent to about 9.46 trillion kilometers (), or 5.88 trillion miles ().One trillion here is taken to be 1012 ...]
s from
Earth in the
constellation
A constellation is an area on the celestial sphere in which a group of visible stars forms Asterism (astronomy), a perceived pattern or outline, typically representing an animal, mythological subject, or inanimate object.
The origins of the e ...
Delphinus.
NGC 7003 has an estimated diameter of 85,000 light-years.
The galaxy was discovered by German astronomer
Heinrich Louis d'Arrest on August 26, 1864.
One
supernova
A supernova is a powerful and luminous explosion of a star. It has the plural form supernovae or supernovas, and is abbreviated SN or SNe. This transient astronomical event occurs during the last evolutionary stages of a massive star or when ...
has been observed in NGC 7003: on May 12, 2011, SN 2011dk (
type II, mag. 16.5) was discovered.
The redshift of NGC 7003 places it in a
filamentary ridge in the
Perseus–Pisces Supercluster. The galaxy is host to a
supermassive black hole with an estimated mass of 3.9 × 10
7 M☉.
See also
*
NGC 1300
NGC 1300 is a barred spiral galaxy located about 61 million light-years away in the constellation Eridanus. The galaxy is about 110,000 light-years across. It is a member of the Eridanus Cluster, a cluster of 200 galaxies.
It was discovered b ...
*
List of NGC objects (7001–7840)
This is a list of NGC objects 7001–7840 from the New General Catalogue (NGC). The astronomical catalogue is composed mainly of star clusters, nebulae, and galaxies. Other objects in the catalogue can be found in the other subpages of the list of ...
References
External links
Astronomical objects discovered in 1864
Spiral galaxies
11662
Delphinus
7003
065887
+03-53-008
Perseus-Pisces Supercluster
{{Spiral-galaxy-stub