M 55 (NGC 6809)
M 55 (NGC 6809) is a globular cluster in the constellation Sagittarius, magnitude 6.3, 19′ across.
A large, loose globular cluster low in Sagittarius; its sparse core makes it easy to resolve in small telescopes.
When and where to see it
It is best placed in the evening sky around August, when it crosses the meridian at about 10 pm local time (around midnight in July). It can be seen from everywhere south of 59°N and never sets south of 59°S.
At its highest it stands 9° up from 50°N, 24° up from 35°N, 59° up from the equator, 86° up from 35°S.
Facts
- Type
- Globular cluster
- Constellation
- Sagittarius
- Designations
- NGC 6809, Specter Cluster
- Magnitude
- 6.3
- Apparent size
- 19′
- Position
- RA 19h 40.0m, Dec −30° 58′ (J2000)
Open AstroPilot to see when M 55 (NGC 6809) is highest tonight from your location, how easy it is with your telescope or binoculars, and an eyepiece view.