Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  64 UMa)  ·  64 gam UMa  ·  HD103829  ·  M 109  ·  NGC 3992  ·  Phad  ·  Phad (γ UMa  ·  The star Phecda
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M109 and Phecda, Massimo Di Fusco
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M109 and Phecda

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M109 and Phecda, Massimo Di Fusco
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M109 and Phecda

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Description

Messier 109 (also known as M109 or NGC 3992) is a barred spiral galaxy located in the constellation Ursa Major that lies at a distance of 83,5 million light years from us and has an apparent magnitude of 10,6. Messier 109 is located only 40 arc minutes southeast of the magnitude 2,44 star Phecda, Gamma Ursae Majoris, the star marking the bowl of the Big Dipper toward the handle.
Messier 109 was probably discovered by Charles Messier in the spring of 1781 while checking the position of two objects discovered by Pierre Méchain, who had found three objects in this region of the sky. Messier only determined the position for M97, the Owl Nebula, and mentioned the other two in his description. He added M109 to his personal copy of the catalogue in 1783.

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