Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  PGC 2480863  ·  PGC 2481311  ·  PGC 2482379  ·  PGC 2482570  ·  PGC 2483751  ·  PGC 2483762  ·  PGC 2483895  ·  PGC 2485269  ·  PGC 2486236  ·  PGC 2486887  ·  PGC 34444  ·  PGC 34447  ·  PGC 34448  ·  PGC 34452  ·  PGC 34453  ·  PGC 34528
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Hickson 50, Gary Imm
Hickson 50, Gary Imm

Hickson 50

Getting plate-solving status, please wait...
Hickson 50, Gary Imm
Hickson 50, Gary Imm

Hickson 50

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Description

Yes, believe it or not, there is an object at the center of this image.

This Astrobin Debut Object is a galaxy group of 5 galaxies, called Hickson 50, located about 2 billion light years away in the constellation of Ursa Major at a declination of +56 degrees.   It lies only about 0.5 degrees east of M97 (Owl Nebula).

Unlike many Hickson objects, this is a true cluster with all 5 galaxies about the same distance away.  I think that this may be the most obscure, faint, and distant object that is part of a common catalogue.

The brightest galaxy, Hickson 50a, is a magnitude 16 elliptical galaxy with a diameter of 70,000 light years.  Of the brightest galaxies (the “a” galaxies) in each of the 100 Hickson galaxy groups, this one (Hickson 50a) is the dimmest.

The Hickson catalog is a collection of 100 galaxy groups, established by Paul Hickson in 1982. Hickson compact galaxy groups are tightly spaced and somewhat isolated from other galaxies. A typical Hickson group has 4 galaxies, but some have up to 8. You can see more about Hickson galaxy groups in my Astrobin Hickson Collection.

It is nice to be posting again after taking 3 days off to welcome my second grandson into the world.  Spending time as a grandparent with a newborn is one of the greatest blessings that one can experience.

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