NGC 4157 (Gary Imm)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: NGC 4157

NGC 4157

This edge-on spiral galaxy is located 55 million light years away in the constellation of Ursa Major at a declination of +50 degrees. It is a magnitude 11.3 galaxy which spans 8 arc-minutes in our apparent view. This corresponds to a diameter of 130,000 light years, slightly larger than our Milky Way.

The near side of the galaxy is at the bottom, with the core peaking at us over the dust lanes. A faint arm extension extends to the right, making the core look offset to the left. This is one of the few images I have published where north is down, not up. I always like to see the near galaxy edge at the bottom.

The bright star in the foreground is the 8th magnitude star HD 105823.

To the right of NGC 4157, a cluster of distant galaxies forms a unique “L” shape.

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Status	Advanced success
Started	...
Astrometry.net job	5662506
PixInsight job	6UAS46V5CVBGCLX1HGH0D9TMLLMA8NBT
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	12h11m04s.628
RA (top/left)	12h09m55s.345
RA (top/right)	12h12m18s.964
RA (bottom/right)	12h12m14s.302
RA (bottom/left)	12h09m49s.945

Dec (center)	+50°29′04″.15
Dec (top/left)	+50°20′45″.56
Dec (top/right)	+50°21′57″.39
Dec (bottom/right)	+50°37′19″.96
Dec (bottom/left)	+50°36′07″.91

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