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... М45 < М46 > М47 ...

Open star cluster M46

Open star cluster M46 is in the constellation Puppis (Pup).


Equatorial coordinates (epoch J2000):
Ra 07h41.8m, Dec -14° 49'

Visual magnitude: 6,5m
Distance from the star clusters M46 to the Sun is 4480 light years
Angular size: 20'
Class: II,2,r
External dimensions the star clusters M46 are about 26 light years.
Number of stars: 500
Age of the object M46 is 500x106 years

Discoverer: Charles Messier, 1771 year.

The designation M46 in other catalogs: NGC 2437

Optimum magnification for a telescope with observations of M46, depending on the aperture of the telescope (D), is about D/6-D/3. Higher magnifications of course add details, but lead to a strong drop in the brightness of the image, making it difficult to observe.
The best month for observing M46 is February.

Nikolay Kurdyapin, astro-map.com  
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