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... М107 < М108 > М109 ...

Spiral galaxy M108

Spiral galaxy M108 is in the constellation Ursa Major (UMa).


Equatorial coordinates (epoch J2000):
Ra 11h11.5m, Dec +55° 40'

Visual magnitude: 10,0m
Distance from the galaxy M108 to the Sun is 46,0*106 light years
Angular size: 9'×2'
Class: Sc
External dimensions the galaxy M108 are about 100000 light years.

Discoverer: Pierre François André Méchain, 16.02.1781 year.

The designation M108 in other catalogs: NGC 3556

Optimum magnification for a telescope with observations of M108, depending on the aperture of the telescope (D), is about D/6-D/3. Higher magnifications of course add details, but lead to a strong drop in the brightness of the image, making it difficult to observe.
The best month for observing M108 is April.

Nikolay Kurdyapin, astro-map.com  
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