Arp 107 (Gary Imm)

Celestial hemisphere: Northern · Constellation: Leo Minor (LMi) · Contains: PGC 1884206 · PGC 1885009 · PGC 1885131 · PGC 1885209 · PGC 1889058 · PGC 1890030 · PGC 1891442 · PGC 32620 · PGC 32628

Arp 107

This obscure object is a pair of colliding galaxies located almost a half billion light years away in the constellation of Leo Minor at a declination of +30 degrees. This galaxy pair spans almost 3 arc-minutes in our apparent view, which corresponds to an actual span of 400,000 light years. These are two large galaxies in the midst of a merger.

The spiral galaxy at the center is UGC 5984, while the elliptical galaxy slightly above and left is MCG+05-26-025. Dr. Arp put this pair in his category of "Elliptical galaxies connected to spiral galaxies". UGC 5984 is a Seyfert galaxy, having an active nucleus, which is not unusual in pairs of interacting galaxies since the gravitational interaction allows the larger galaxy's central black hole to be fed.

I love star streams and this object has some interesting ones. The spiral galaxy appears blue with many star clusters as the interaction has initiated a tremendous amount of recent star formation. I like the apparent double arm section just below the core.

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Status	Advanced success
Started	...
Astrometry.net job	3377650
PixInsight job	P55NVXZWU94VW1HX2229WHIEDRKWH0Y3
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	10h52m14s.809
RA (top/left)	10h52m53s.982
RA (top/right)	10h51m39s.242
RA (bottom/right)	10h51m35s.720
RA (bottom/left)	10h52m50s.290

Dec (center)	+30°03′42″.72
Dec (top/left)	+30°09′57″.40
Dec (top/right)	+30°10′53″.25
Dec (bottom/right)	+29°57′27″.68
Dec (bottom/left)	+29°56′31″.62

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Arp 107

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