M 25 (IC 4725)
M 25 (IC 4725) is an open cluster in the constellation Sagittarius, magnitude 4.6, 32′ across.
A large, bright open cluster that is easy in binoculars. It contains the Cepheid variable U Sagittarii, which brightens and fades every 6.7 days.
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 71°N and never sets south of 71°S.
At its highest it stands 21° up from 50°N, 36° up from 35°N, 71° up from the equator, 74° up from 35°S.
Facts
- Type
- Open cluster
- Constellation
- Sagittarius
- Designations
- IC 4725
- Magnitude
- 4.6
- Apparent size
- 32′
- Position
- RA 18h 31.8m, Dec −19° 7′ (J2000)
Open AstroPilot to see when M 25 (IC 4725) is highest tonight from your location, how easy it is with your telescope or binoculars, and an eyepiece view.