Hubble Shot of I Zw 18

The galaxy resides 30 million light-years away in the constellation Ursa Major. The observation was made in November 1994 and March 1995. The bright dots scattered throughout the image represent clusters of stars.


D. Hunter (Lowell Observ.) and A. Aloisi (JHU)

About the Image

NASA press release
NASA caption
Release date:8 January 2002, 20:00
Size:518 x 389 px

About the Object

Name:I Zw 18
Type:• Local Universe : Galaxy : Type : Irregular
• Local Universe : Galaxy : Size : Dwarf
Distance:300 million light years
Constellation:Ursa Major

Image Formats

Large JPEG
144.1 KB
Screensize JPEG
286.8 KB


Position (RA):9 34 2.08
Position (Dec):55° 14' 26.32"
Field of view:0.39 x 0.30 arcminutes
Orientation:North is 32.1° left of vertical

Colours & filters

Optical Hubble Space Telescope

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