Celestial hemisphere:  Northern  ·  Constellation: Ursa Minor (UMi)  ·  Contains:  IC 1110
Ursa Minor Dwarf Galaxy - UGC9749, Jan Sjoerd de Vries
Ursa Minor Dwarf Galaxy - UGC9749
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Ursa Minor Dwarf Galaxy - UGC9749

Ursa Minor Dwarf Galaxy - UGC9749, Jan Sjoerd de Vries
Ursa Minor Dwarf Galaxy - UGC9749
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Ursa Minor Dwarf Galaxy - UGC9749

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Description

The Ursa Minor Dwarf (https://en.wikipedia.org/wiki/Ursa_Minor_Dwarf) is a dwarf spheroidal galaxy, discovered during the Palomar Sky Survey in 1955. It appears in the Ursa Minor constellation, and is a satellite galaxy of the Milky Way. The galaxy consists mainly of older stars and seems to house little to no ongoing star formation. Its centre is around 225,000 light years distant from Earth. In 1999, the Hubble Space Telescope was used to confirm that the Ursa Minor dwarf galaxy had a straightforward evolutionary history with a single burst of star formation that lasted around 2 billion years and took place around 14 billion years ago, and that the galaxy was probably as old as the Milky Way itself.

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Ursa Minor Dwarf Galaxy - UGC9749, Jan Sjoerd de Vries