I Zwicky 18

I Zwicky 18
Hubble Space Telescope (HST) image of I Zwicky 18 Credit: HST/NASA/ESA
Observation data (J2000 epoch)
Constellation	Ursa Major
Right ascension	09h 34m 02.0s[1]
Declination	+55° 14′ 28″[1]
Redshift	751 ± 2 km/s[1]
Distance	0.059 Gly
Apparent magnitude (V)	16.0[1]
Characteristics
Type	I,[1] Starburst Galaxy
Apparent size (V)	0.3′ × 0.2′[1]
Other designations
UGCA 166, Mrk 116, PGC 27182[1]

I Zwicky 18 is a blue compact dwarf galaxy located about 59 million light years away^[2] in the constellation Ursa Major. The galaxy was first identified by Swiss astronomer Fritz Zwicky in a 1930s photographic survey of galaxies.^[3]