Open cluster · Sagittarius

M25

Also known as: IC 4725

mag 4.632′ across

About

M25 is an open cluster of magnitude 4.6 in Sagittarius, about 32′ across.

M25 is in the constellation Sagittarius.
Best evenings: around mid-August 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 south of 61° N.

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	M25, IC 4725
Type	Open cluster
Magnitude	4.6The smaller the number, the brighter.
Apparent size	32′the full Moon is 31′ across
Constellation	Sagittarius
Right ascension (J2000)	18h 31m 46.8s
Declination (J2000)	−19° 06′ 54″