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Contains:  M 76, Little Dumbbell, NGC 650
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Messier 76 or M76 or Little Dumbbell Nebula, 





    
        

            Stephen Harris
Messier 76 or M76 or Little Dumbbell Nebula

Messier 76 or M76 or Little Dumbbell Nebula

Technical card

Resolution: 1180x876

Dates:Oct. 22, 2016

Frames: 59x30"

Integration: 0.5 hours

Avg. Moon age: 21.82 days

Avg. Moon phase: 53.50%

Astrometry.net job: 1294579

RA center: 25.614 degrees

DEC center: 51.565 degrees

Pixel scale: 3.015 arcsec/pixel

Orientation: 93.593 degrees

Field radius: 0.398 degrees

Locations: HAS Dark Site , Columbus, Texas, United States

Description

The Little Dumbbell Nebula, also known as Messier 76, NGC 650/651, the Barbell Nebula, or the Cork Nebula, is a planetary nebula in the constellation Perseus. It was discovered by Pierre Méchain in 1780 and included in Charles Messier's catalog of comet-like objects as number 76. The structure is now classed as a bipolar planetary nebula (BPNe).

Distance to M76 is currently estimated as 780 parsecs or 2,500 light years, making the average dimensions about 0.378 pc. (1.23 ly.) across.

The total nebula shines at the apparent magnitude of +10.1 with its central star or planetary nebula nucleus (PNN) at +15.9v (16.1B) magnitude. The UV-light from the PNN is expanding outer layers that form the present nebula, and has the surface temperature of about 88,400 K. The whole planetary nebula is approaching us at −19.1 km.s−1.

The Little Dumbbell Nebula derives its common name from its resemblance to the Dumbbell Nebula (M27) in Vulpecula. It was originally thought to consist of two separate emission nebulae and was thus given two catalog numbers in the NGC 650 and 651. Some consider this object to be one of the faintest and hardest to see objects in Messier's list.

Comments

Author

astrosmh
Stephen Harris
License: None (All rights reserved)
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Revisions

  • Messier 76 or M76 or Little Dumbbell Nebula, 





    
        

            Stephen Harris
    Original
  • Messier 76 or M76 or Little Dumbbell Nebula, 





    
        

            Stephen Harris
    B
  • Final
    Messier 76 or M76 or Little Dumbbell Nebula, 





    
        

            Stephen Harris
    C

Sky plot

Sky plot

Histogram

Messier 76 or M76 or Little Dumbbell Nebula, 





    
        

            Stephen Harris