Open cluster · Auriga

M37

Also known as: NGC 2099

mag 5.624′ across

About

M37 is an open cluster of magnitude 5.6 in Auriga, about 24′ across.

M37 is in the constellation Auriga.
Best evenings: around early February it is highest at about 9 pm (10 pm in summer time); a month earlier, two hours later.
Where on Earth: it is seen well, at least 10° up, from north of 47° S.
Winter Hexagon: Three clusters in a row in Auriga, between Capella and Elnath; binoculars.

When it rises and sets tonight, how high it climbs and how much the Moon gets in the way are worked out in your browser for your place.

EyesA faint smudge at the limit of vision, only from a dark site.
Binoculars (10×50)A rich scattering of stars — binoculars often give the best view.
Telescope (6–8 inch)Dozens of stars, many sharp and some coloured.

For a dark country sky with no Moon. From a city, faint galaxies and nebulae can disappear completely.

Designations	M37, NGC 2099
Type	Open cluster
Magnitude	5.6The smaller the number, the brighter.
Apparent size	24′the full Moon is 31′ across
Constellation	Auriga
Right ascension (J2000)	05h 52m 18.4s
Declination (J2000)	+32° 33′ 11″