M 109 (NGC 3992) in Ursa Major (Ara Jerahian)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: M 109 · NGC 3992

M 109 (NGC 3992) in Ursa Major

M109 (NGC 3992) is a barred spiral galaxy approximately 80 Mly away in Ursa Major. M109 is located southeast of the star Phecda (γ UMa). It is by far the most distant object in the Messier Catalog.

In March 1956, supernova 1956A was observed in M109. SN 1956A was a type Ia supernova in the southeast part of the galaxy, as marked in the annotated revision, glowing at magnitude 12.8 to 12.3 at its maximum. SN 1956A has been the only supernova observed in M109 since its discovery.

M109 has three known satellite galaxies (UGC 6923, UGC 6940, and UGC 6969). Only UGC 6923 and 6940 are within the FOV of my image.

Here is the legend for the annotated objects:

* - Star

G - Galaxy

ClG - Cluster of Galaxies

GiC - Galaxy in Cluster of Galaxies

BiC - Brightest galaxy in a Cluster (BCG)

GiG - Galaxy in Group of Galaxies

GiP - Galaxy in Pair of Galaxies

QSO - Quasar

SN* - SuperNova

Rad - Radio-source

LM* - Low-mass star (M<1solMass)

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M 109 (NGC 3992) in Ursa Major

M 109 (NGC 3992) in Ursa Major

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M 109 (NGC 3992) in Ursa Major

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