English | Deutsch | Español | Italiano | Português |
... М74 < М75 > М76 ...

Globular star cluster M75

Globular star cluster M75 is in the constellation Sagittarius (Sgr).


Equatorial coordinates (epoch J2000):
Ra (α):20h06.1m, Dec (δ):-21° 55'

Visual magnitude: 9,5m
Distance from the star clusters M75 to the Sun is 77840 light years
Angular size: 7'
Class: I
External dimensions the star clusters M75 are about 160 light years.
Estimated weight the star clusters: 500x103 suns

Discoverer: Pierre François André Méchain, 1780 year.

The designation M75 in other catalogs: NGC 6864

M75 in the middle latitudes is located quite low above the horizon, so observation is difficult due to atmospheric distortions.
In the northern latitudes is not visible. Optimum magnification for a telescope with observations of M75, depending on the aperture of the telescope (D), is about D/3-D. 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 M75 is August. At this time, the object is at midnight near its highest point in the sky, that is, it is less affected by light from the lanterns and atmospheric distortions.

Мessier 74
Мessier 76

Nikolay Kurdyapin, astro-map.com  

© Copyright 2018-2019, astro-map.com
At a reprint of materials from this site link to the astro-map.com obligatory.