Globular cluster · Sagittarius

M75

Also known as: NGC 6864

mag 8.66′ across

About

M75 is a globular cluster of magnitude 8.6 in Sagittarius, about 6′ across.

M75 is in the constellation Sagittarius.
Best evenings: around early September 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 58° 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.

EyesNot visible to the naked eye.
Binoculars (10×50)A small fuzzy star.
Telescope (6–8 inch)A bright round glow; its edges break into stars at high power.

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

Designations	M75, NGC 6864
Type	Globular cluster
Magnitude	8.6The smaller the number, the brighter.
Apparent size	6′the full Moon is 31′ across
Surface brightness	≈ 21.1 mag/arcsec²Estimate from the magnitude and size, per square arcsecond.
Constellation	Sagittarius
Right ascension (J2000)	20h 06m 04.8s
Declination (J2000)	−21° 55′ 20″