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M13
M13 — Great Hercules Cluster
Globular Cluster
· HerculesBeginner
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Observing: Tonight · 8:00 PM–5:00 AM
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Target information
- Object type
- Globular Cluster
- Constellation
- Hercules
- Right ascension
- 16h 41m 42s
- Declination
- +36° 27′ 41″
- Magnitude
- 5.8
- Angular size
- 20′
- Surface brightness
- 12 mag/arcmin²
- Difficulty
- Beginner
- Best months
- May-Aug
- Catalog IDs
- M13;NGC 6205
About this target
Brightest globular in the northern sky; resolves into stars at moderate apertures.