M75 (NGC 6864)
Also known as M75 · M 75 · NGC 6864
M75 (NGC 6864) is a globular star cluster in the constellation Sagittarius, about 68,490 light-years from Earth.
Facts
| Type | Globular star cluster |
|---|---|
| Constellation | Sagittarius |
| Position (J2000) | 20h 06m 04s, −21° 55′ |
| Distance | 68,490 light-years (its light set off about 68,490 years ago) |
| Brightness | magnitude 8.26 (smaller is brighter; the faintest stars the eye sees are about 6) |
| Size on the sky | 2.4′ × 2.2′ (the full Moon is about 31′) |
| Filter | No filter (It shines in starlight of every colour, so a nebula filter would only dim it; a dark sky helps more.) |
| Studied in | 398 scientific papers (SIMBAD) |
When and how to see it
M75 (NGC 6864) is highest in the sky at midnight in July. From India (about 20° N) it climbs to about 48° above the horizon; from 50° N, to about 18°. To see it you need binoculars.
Heights are worked out for India and for 50° N. Set your location in Settings to see them for where you are.
For tonight's best time from your own town, the darkness and the Moon, open it on the map and see its "Tonight from your location" card.
More in Sagittarius
- Lagoon Nebula (M8)
- M18 (NGC 6613)
- M21 (NGC 6531)
- M23 (NGC 6494)
- Omega Nebula (M17)
- Sagittarius A*
- Sagittarius Cluster (M22)
- Trifid Nebula (M20)
Everything in Sagittarius · All 88 constellations · All sky objects
Data: SIMBAD (CDS, Strasbourg; the site's weekly copy) · OpenNGC · Data sources & credits