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Contains:  NGC 2438, M 46, NGC 2437
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M46, 





    
        

            Miguel Garcia
M46

M46

Technical card

Resolution: 1392x1040

Dates:Feb. 15, 2015

Frames: 7x300"

Integration: 0.6 hours

Avg. Moon age: 25.55 days

Avg. Moon phase: 16.89%

Astrometry.net job: 563682

RA center: 115.404 degrees

DEC center: -14.780 degrees

Pixel scale: 2.115 arcsec/pixel

Orientation: -34.132 degrees

Field radius: 0.510 degrees

Locations: Home_Weston, Weston, FL, United States

Description

Messier 46 (also known as M 46 or NGC 2437) is an open cluster in the constellation of Puppis. It was discovered by Charles Messier in 1771. Dreyer described it as "very bright, very rich, very large." M46 is about 5,500 light-years away.[1] There are an estimated 500 stars in the cluster, and it is thought to be some 300 million years old.[2]

The planetary nebula NGC 2438 appears to lie within the cluster near its northern edge (the faint smudge at the top center of the image), but it is most likely unrelated since it does not share the cluster's radial velocity.[1][3] The case an example of a superimposed pair similar to that of NGC 2818.[1][4]

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Intihuatana
Miguel Garcia
License: None (All rights reserved)
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M46, 





    
        

            Miguel Garcia