Celestial hemisphere:  Southern  ·  Constellation: Aquarius (Aqr)  ·  Contains:  NGC 7724  ·  NGC 7727
Getting plate-solving status, please wait...
Arp 222 - NGC 7727, 



    
        

            Gary Imm
Arp 222 - NGC 7727, 



    
        

            Gary Imm

Arp 222 - NGC 7727

Getting plate-solving status, please wait...
Arp 222 - NGC 7727, 



    
        

            Gary Imm
Arp 222 - NGC 7727, 



    
        

            Gary Imm

Arp 222 - NGC 7727

Acquisition details

Dates:
June 2, 2019 ·  June 3, 2019 ·  June 4, 2019
Frames:
Astrodon Gen2 I-Series Tru-Balance Blue: 30×120(1h) (gain: 111.00) -12°C bin 1×1
Astrodon Gen2 I-Series Tru-Balance Green: 30×120(1h) (gain: 11.00) -12°C bin 1×1
Astrodon Gen2 I-Series Tru-Balance Lum: 60×120(2h) (gain: 111.00) -12°C bin 1×1
Astrodon Gen2 I-Series Tru-Balance Red: 30×120(1h) (gain: 111.00) -12°C bin 1×1
Integration:
5h
Avg. Moon age:
9.93 days
Avg. Moon phase:
0.84%

RA center: 23h39m53s.377

DEC center: -12°1733.73

Pixel scale: 0.494 arcsec/pixel

Orientation: -179.202 degrees

Field radius: 0.322 degrees

More info:Open 

Resolution: 3762x2814

File size: 3.3 MB

Locations: Backyard (Mag 20.8 - Bortle 4.5), Onalaska, Texas, United States

Data source: Backyard

Description

This object is a rarely imaged, severely distorted, face-on spiral galaxy located 70 million light years away in the constellation of Aquarius, at a declination of -12 degrees. Its diameter of 4 arc-minutes corresponds to a width of 90,000 light years.

This galaxy has numerous arcing star streams which wrap around the core. The "core" is actually two bright cores side by side, with a separation of only 3 arc-seconds. These two bright cores are visible upon close examination of the full resolution image. Because of these two cores and the star streams, it appears that this galaxy has been the product of a galaxy merger.

Although the central galaxy region is a bit pinkish in hue, most of the galaxy is white. This, plus the lack of star clusters and HII regions, indicates that little star formation is occurring. Long term, this galaxy will likely evolve into a large elliptical.

NGC 7724 is seen at the lower left. Although this galaxy is not believed to be interacting with NGC 7727, it has an interesting structure all its own. The core is oval shaped and is likely a weak bar. Out of each end of the bar extends a single arm, each of which wrap around 180 degrees. For some reason one of these arms, after wrapping 180 degrees, appears to reconnect to the opposite end of the bar.

Comments

Revisions

  • Final
    Arp 222 - NGC 7727, 



    
        

            Gary Imm
    Original
  • Arp 222 - NGC 7727, 



    
        

            Gary Imm
    B

B

Description: Comparison to Original Arp Image

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Sky plot

Sky plot

Histogram

Arp 222 - NGC 7727, 



    
        

            Gary Imm