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... М41 < М42 > М43 ...

Emission nebula and open star cluster M42

Emission nebula and open star cluster M42 or Orion nebula is in the constellation Orion (Ori).

M42

Equatorial coordinates (epoch J2000):
Ra 05h35.4m, Dec -05° 23'

Visual magnitude: 5,0m - this object can be seen with the naked eye on a black sky, in the absence of illumination from street lighting.
Distance from the nebula M42 to the Sun is 1300 light years
Angular size: 65'×60'
External dimensions the nebula M42 are about 15 light years.

Discoverer: Nicolas-Claude Fabri de Peiresc, 26.11.1610 year.

The designation M42 in other catalogs: NGC 1976

Optimum magnification for a telescope with observations of M42, depending on the aperture of the telescope (D), is about D/6-D/2. 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 M42 is January. ... М41 < М42 > М43 ...

The parameters of the open star cluster M42

or Orion star cluster

Equatorial coordinates (epoch J2000):
Ra 05h35.4m, Dec -05° 23'


Distance from the star clusters M42 to the Sun is 1300 light years
Angular size: 3'
External dimensions the star clusters M42 are about 4 light years.
Number of stars: 300+
Age of the object M42 is 0,1x106 years


The best month for observing M42 is .


Nikolay Kurdyapin, astro-map.com  
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