Caldwell 18 (50289818793)

C18 · galaxy

NGC 185

NGC 185 is a dwarf spheroidal galaxy located 2.08 million light-years from Earth, appearing in the constellation Cassiopeia.

RA00h 38m 57sDec+48° 20' 14"

Image: NASA Hubble Space Telescope. CC BY 2.0, via Wikimedia Commons.

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Identity & coordinates

Identification

Primary designation
C18
All designations
C18 · NGC 185
Object type
Galaxy
Constellation
Cassiopeia
Best viewing
Autumn · Winter

Coordinates & physical

Right ascension (J2000)
00h 38m 57s
Declination (J2000)
+48° 20' 14"
Apparent magnitude (V)
Distance
Redshift (z)
-0.000674
III

Visibility tonight

V

The science

NGC 185 is a dwarf spheroidal galaxy located 2.08 million light-years from Earth, appearing in the constellation Cassiopeia. It is a member of the Local Group, and is a satellite of the Andromeda Galaxy (M31). NGC 185 was discovered by William Herschel on November 30, 1787, and he cataloged it "H II.707". John Herschel observed the object again in 1833 when he cataloged it as "h 35", and then in 1864 when he cataloged it as "GC 90" within his General Catalogue of Nebulae and Clusters. NGC 185 was first photographed between 1898 and 1900 by James Edward Keeler with the Crossley Reflector of Lick Observatory. Unlike most dwarf elliptical galaxies, NGC 185 contains young stellar clusters, and star formation proceeded at a low rate until the recent past. NGC 185 has an active galactic nucleus (AGN) and is usually classified as a Type II Seyfert galaxy, though its status as a Seyfert is questioned. It is possibly the closest Seyfert galaxy to Earth, and is the only known Seyfert in the Local Group.

Summary adapted from Wikipedia · CC-BY-SA-4.0

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References

Wikipedia title resolved via designation — fell back to an alternate catalog designation.

1 merge conflict resolved
  • coordinates: SIMBAD missing → NED used