I Zwicky 18
The I Zwicky 18 is an irregular dwarf galaxy. It is 45 million years light from Earth in the constellation of the Ursa Major. It was identified by first time in the 1930s by the astronomer Fritz Zwicky.
| I Zwicky 18 | |
|---|---|
 I Zwicky 18 observed by the Hubble Telescope | |
| Observation data (J2000 [1] epoch) | |
| Right ascension | 09h 34m 02.0s[1] |
| Declination | 55° 14′ 28″[1] |
| Redshift | 751±2 km/s |
| Distance | 0.059 Gly |
| Type | Irr [2] |
| Notable features | Very young galaxy [2][3] |
| Other designations | |
| UGCA 166, SBS 930+554, KUG 930+554, AGC 190351, HFE2003 PSX-01, CBB2012 79 | |
A young galaxy
I Zwicky 18, only 500 million years of age, is a recently born galaxy compared with most.[3] It is still making population III stars, almost entirely made of hydrogen and helium. The Milky Way is about 12,000 million years old.
I Zwicky 18 Media
I Zwicky 18 and its component or companion I Zwicky 18 C
Related pages
Other websites
- NASA/IPAC Extraglactic Database
- I Zwicky 18 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images