Arp 180 (Gary Imm)

Celestial hemisphere: Southern · Constellation: Eridanus (Eri) · Contains: PGC 1052322 · PGC 1052489 · PGC 1052814 · PGC 1053126 · PGC 1053172 · PGC 1054318 · PGC 16261

Arp 180

This Astrobin Debut Object is a pair of interacting galaxies located 200 million light years away in the constellation of Eridanus at a declination of -5 degrees. The main disk spans 30 arc-seconds in our apparent view, which corresponds to a diameter of 30,000 light years. But the overall span of the star stream is 150,000 light years.

I love the contrasting colors of this pair. It looks to me like the main galaxy, in yellow, is being distorted by the small companion galaxy, in blue. Note how bright the arm with the companion is, compared to the opposite arm. I imagine that over time these 2 galaxies will merge. Dr. Arp classified this object in the category of Galaxies with Narrow Filaments.

The beautiful face-on grand spiral galaxy to the lower left is 2MASX J04533482-0448443. It is 1.4 billion light years away and has a diameter of 100,000 light years. Below this galaxy is a fascinating chain of tiny distant galaxies which descends down to a edge-on spiral galaxy at the bottom of the page.

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Description: Comparison with Original Arp Image

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CMOS Imagers
Cloudy Nights
Arp's Peculiar Galaxies
Unique or Unusal Deep Sky Targets
First on Astrobin
Schmidt-Cassegrain Telescope (SCT) Imagers
Rarely Imaged Small DSOs
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ZWO ASI1600MM/QHY163M

Arp Catalog (Complete)
Astrobin Debuts (670 DSOs)
Bridged Companions

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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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Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Status	Advanced success
Started	...
Astrometry.net job	4157016
PixInsight job	6AO1LAHLVK9K09H4IKHJCR81EURD0EBX
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	04h53m24s.661
RA (top/left)	04h53m52s.744
RA (top/right)	04h52m54s.131
RA (bottom/right)	04h52m56s.572
RA (bottom/left)	04h53m55s.201

Dec (center)	-04°47′33″.24
Dec (top/left)	-04°41′33″.22
Dec (top/right)	-04°42′21″.12
Dec (bottom/right)	-04°53′32″.86
Dec (bottom/left)	-04°52′45″.60

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Arp 180

Arp 180

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