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Hubble image of M110
Hubble · Messier 110 · NASA, ESA, STScI and D. Geisler (Universidad de Concepción)

Messier 110

Galaxy in Andromeda · 2.69 million light-years

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TypeGalaxy
ConstellationAndromeda
Right ascension0h 40m 22s
Declination+41° 41′
Object distance2.69 million light-years
Apparent magnitude8.2
Apparent size16.2′ (arc-minutes)
Approx. true diameter12,676 light-years across
Also known asM110 · NGC 205
Messier 110 is a galaxy (also catalogued as NGC 205) in the constellation Andromeda — an island of billions of stars far beyond our own Milky Way. It was recorded by Charles Messier in his famous catalogue of 110 deep-sky objects. It spans roughly 16.2 arc-minutes on the sky. At about magnitude 8.2, it shows up well in a small backyard telescope.

Although it appears about 16.2′ wide on the sky, its real span is roughly 12,676 light-years — the difference is a measure of how far away it lies.

Observing Messier 110

Messier 110 lies in the constellation Andromeda and is best placed in the evening sky around September. Its maximum altitude above the horizon depends on your latitude. It is best placed for observers in the northern hemisphere, and sits low for those far south. A small backyard telescope will show it; binoculars may hint at it under dark skies. Note that the listed magnitude is spread across the whole object — diffuse galaxies and nebulae are often harder to see than the number alone suggests, so dark, moonless skies help a great deal.

See Messier 110 in Universe Finder

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Sources

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