| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2011/09/11 | 2 | 10 | DRO | N23W03 | |
| 2011/09/12 | 2 | 10 | BXO | N23W15 | |
| 2011/09/16 | 3 | 50 | CRO | N22W69 | |
| 2011/09/17 | 3 | 90 | DAO | N24W82 | |
| 2011/09/18 | 2 | 10 | BXO | N21W93 |
| C |
|---|
| 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C1.15 | 2011/09/10 | 17:16 | 17:19 | 17:21 |
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| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/04 | M6.0 |
| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 175.4 +83.6 |
| Last 30 days | 107.3 +14.6 |