Target image unavailable
M21
M21 — Open Cluster M21
Open Cluster
· SagittariusBeginner
Set your observing location
Observing: Tonight · 8:00 PM–5:00 AM
Observability
Not calculated
0 out of 5
Location Required
Set your observing location to calculate observability for this session.
Overall Imaging Recommendation
Not calculated
0 out of 5
Equipment Required
Select a telescope and camera to calculate suitability.
Add to Planner
Set your observing location above for accurate rise, transit and darkness times.
Target information
- Object type
- Open Cluster
- Constellation
- Sagittarius
- Right ascension
- 18h 04m 36s
- Declination
- -22° 30′ 00″
- Magnitude
- 6.5
- Angular size
- 13′
- Surface brightness
- Not recorded
- Difficulty
- Beginner
- Best months
- Jun-Sep
- Catalog IDs
- M21