Fireworks Galaxy (James R Potts)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Fireworks Galaxy · NGC 6946

Fireworks Galaxy

This beautiful galaxy is located between the Cepheus & Cygnus constellations and is around 20 to 25 million light years away, depending on different measurements. NGC6946 was discovered by William Herschel in 1798 and spans almost 40,000 light years across. It gets its nickname due to the number of supernovae that have been observed, 10 as of 2021.

The galaxy hosts several unusual objects. These include long regions in the galaxy’s spiral arms that appear to not have any stars or hydrogen gas, two unusual nebulous dark lanes, and the so-called Hodge’s Complex and the Red Ellipse. Hodge Complex is a possible super-supernova remnant. The complex includes a young supercluster of supergiant stars, about two dozen smaller clusters, and many young, exceptionally luminous stars with ages between 5 and 30 million years. The Red Ellipse is an enormous object that looks like a giant supernova remnant. Its major axis stretches 300 parsecs (978 light years) across.

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Status	Advanced success
Started	...
Astrometry.net job	8326498
PixInsight job	RPBHDGH8WN4RX7ZHLM4G84NE51J6828M
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h35m20s.852
RA (top/left)	20h35m12s.800
RA (top/right)	20h29m43s.715
RA (bottom/right)	20h35m29s.271
RA (bottom/left)	20h41m04s.611

Dec (center)	+60°09′01″.50
Dec (top/left)	+60°55′27″.39
Dec (top/right)	+59°49′29″.18
Dec (bottom/right)	+59°22′33″.41
Dec (bottom/left)	+60°27′35″.44

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