NGC 6638
NGC 6638 is a globular cluster in the constellation Sagittarius, magnitude 9.0, 4.2′ across.
A 9.0-magnitude globular cluster in Sagittarius, about 4.2′ across. It lies about 31,000 light-years away.
When and where to see it
It is best placed in the evening sky around July, when it crosses the meridian at about 10 pm local time (around midnight in June). It can be seen from everywhere south of 65°N and never sets south of 65°S.
At its highest it stands 15° up from 50°N, 30° up from 35°N, 65° up from the equator, 80° up from 35°S.
Facts
- Type
- Globular cluster
- Constellation
- Sagittarius
- Designations
- NGC 6638
- Magnitude
- 9.0
- Apparent size
- 4.2′
- Position
- RA 18h 30.9m, Dec −25° 30′ (J2000)
Open AstroPilot to see when NGC 6638 is highest tonight from your location, how easy it is with your telescope or binoculars, and an eyepiece view.