Celestial hemisphere:  Southern  ·  Constellation: Libra (Lib)  ·  Contains:  NGC 5728  ·  PGC 160085  ·  PGC 884546  ·  PGC 884825
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NGC 5728, Gary Imm
NGC 5728, Gary Imm

NGC 5728

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NGC 5728, Gary Imm
NGC 5728, Gary Imm

NGC 5728

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Description

This Astrobin Debut Object is a barred multi-ring Seyfert spiral galaxy located 90 million light years away in the constellation of Libra at a declination of -17 degrees.  It is a magnitude 13 galaxy which spans 4.5 arc-minutes in our apparent view.  This corresponds to a Milky Way like diameter of 120,000 light years.

This is one of the most fascinating disk structures that you will ever see.  I count 4 ring structures.  It is incredible to me that this galaxy has not been imaged on Astrobin before.

Surrounding the bright core is an even brighter tiny nuclear ring.  From this ring, 2 unique short faint spiral arms extend into the inner region, forming a rough oval around the nuclear ring.  

The central bar is huge, extending across the entire mid-region.  From each end of the bar an arm extends out and wraps around to the opposite bar end, forming the 3rd ring. 

Perpendicular to the bar, the 4th ring is a faint pseudo-ring extending out to the outer disk.

Numerous blue star clouds are seen in the star formation regions near each bar end.

The interesting small grand design spiral galaxy to the right is LEDA 160085. It is much further away, at 600 million light years, and has a diameter of 70,000 light years.  It appears to be interacting with 2 nearby companions.

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