UGC 2489 (Zwickys Nonet) - center of Abell 407 (Gary Imm)

Celestial hemisphere: Northern · Constellation: Perseus (Per)

UGC 2489 (Zwickys Nonet) - center of Abell 407

This rarely imaged object is the most dense system of galaxies in the sky. This image captures the central region of the Abell 407 galaxy cluster, located 0.7 billion light years away in the constellation of Perseus at a declination of +36 degrees. The tiny group of galaxies at the center of the image is named after Swiss astronomer Dr. Fritz Zwicky, who first identified this group in 1971. The word "nonet" has its origins in Latin and Italian. It means nine things, usually people, but in this case it refers to 9 elliptical galaxies which have the single designation of UGC 2489.

The tight group of 9 elliptical galaxies is embedded within a faint, diffuse stellar halo. The 9 galaxies are crammed into a space of less than 1 arc-minute in our apparent view, which is an apparent size not much larger in the sky than our current view of the planet Jupiter. This space, at 170,000 light years in diameter, is not much larger than our Milky Way galaxy in actual size.

In addition to the nonet, many other galaxies are seen in the background. The galaxy directly below nonet is UGC 2491, looking like a Star Wars Tie Fighter. Just above and left is a galaxy pair which look close enough to each other to be interacting. This pair is UGC 2493 and 2MASX J03015902+3545373.

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Status	Advanced success
Started	...
Astrometry.net job	9234204
PixInsight job	8TKSNFULP61SLJC116OS9DQGNSDKDFM7
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	03h01m51s.774
RA (top/left)	03h03m30s.373
RA (top/right)	03h00m16s.269
RA (bottom/right)	03h00m13s.613
RA (bottom/left)	03h03m26s.493

Dec (center)	+35°50′21″.81
Dec (top/left)	+36°03′37″.64
Dec (top/right)	+36°04′34″.72
Dec (bottom/right)	+35°37′01″.20
Dec (bottom/left)	+35°36′07″.32

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UGC 2489 (Zwickys Nonet) - center of Abell 407

UGC 2489 (Zwickys Nonet) - center of Abell 407

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UGC 2489 (Zwickys Nonet) - center of Abell 407

UGC 2489 (Zwickys Nonet) - center of Abell 407

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