Celestial hemisphere:  Northern  ·  Constellation: Ursa Minor (UMi)  ·  Contains:  IC 1110
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UGC 9749, Gary Imm
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UGC 9749

Getting plate-solving status, please wait...
UGC 9749, Gary Imm
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UGC 9749

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Description

This object, one of the dimmest objects I have ever imaged, is the Ursa Minor Dwarf Galaxy. It is a satellite of our Milky Way galaxy, located only 200,000 light years away. It spans 2000 light years and has the same apparent size in the sky as our full moon.

One other image of this object appears on Astrobin. As far as I know, this is the only object on Astrobin where viewing the full resolution image is really necessary to see the object.

Dwarf galaxies are typically low in brightness. This galaxy is a dwarf spheroidal galaxy, which is even more diffuse and poorly defined than a typical dwarf. It is the faintest known galaxy of our local group, with a surface brightness of 25.5.

The galaxy shows up as dim individual points of blue light scattered throughout the center of the image. The galaxy is nearly impossible to see without using the full resolution view. Once you know what you are looking for, it is possible to see the galaxy in the windowed view as a slightly brighter patch of sky that is roughly oval shaped and spans about 1/2 of the image width from upper left to lower right.

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UGC 9749, Gary Imm

In these collections

Dwarf Galaxies