Celestial hemisphere:  Northern  ·  Constellation: Boötes (Boo)
Getting plate-solving status, please wait...
Arp 302, 



    
        

            Gary Imm
Arp 302, 



    
        

            Gary Imm

Arp 302

Getting plate-solving status, please wait...
Arp 302, 



    
        

            Gary Imm
Arp 302, 



    
        

            Gary Imm

Arp 302

Acquisition details

Dates:
April 19, 2021 ·  April 20, 2021
Frames:
Astrodon Gen2 I-Series Tru-Balance Blue: 30×120(1h) (gain: 120.00) -20°C bin 2×2
Astrodon Gen2 I-Series Tru-Balance Green: 30×120(1h) (gain: 120.00) -20°C bin 2×2
Astrodon Gen2 I-Series Tru-Balance Lum: 60×120(2h) (gain: 120.00) bin 2×2
Astrodon Gen2 I-Series Tru-Balance Red: 30×120(1h) (gain: 120.00) -20°C bin 2×2
Integration:
5h
Avg. Moon age:
7.12 days
Avg. Moon phase:
47.27%

RA center: 14h57m00s.480

DEC center: +24°3640.83

Pixel scale: 0.343 arcsec/pixel

Orientation: -85.024 degrees

Field radius: 0.167 degrees

More info:Open 

Resolution: 2546x2413

File size: 2.0 MB

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

Data source: Backyard

Description

This Astrobin Debut Object, also known as UGC 9618, is a pair of magnitude 15 interacting spiral galaxies located 0.5 billion light years away in the constellation of Bootes at a declination of +25 degrees. Each galaxy of this pair spans 40 arc-seconds in our apparent view, which corresponds to a diameter of 100,000 light years.

In his Arp catalog, Dr. Arp classified this object into the category of Double Galaxies. Detailed studies of this object have revealed a shared gas envelope, confirming that these 2 are indeed in the early stages of interacting. Based on the minimal interaction so far, I believe that these galaxies are not as close as they appear visually to us, with some distance between them in the out-of-plane direction.

The left yellow edge-on galaxy is MCG+04-35-019. I like the dark dust lane that bisects the galaxy, along with the disturbed inclined halo which appears to be the start of a polar ring.

The right blue face-on galaxy is MCG+04-35-019. The arms appear a bit disturbed with some forming VV rows. The left side of the disk is noticeably brighter than the right side.

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