| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2009/12/20 | 3 | 10 | BXO | S29W19 | |
| 2009/12/21 | 6 | 10 | BXO | S27W32 | |
| 2009/12/22 | 7 | 70 | DSO | S27W45 | |
| 2009/12/23 | 3 | 10 | BXO | S27W58 | |
| 2009/12/24 | 2 | 50 | CSO | S28W70 |
| C | M |
|---|---|
| 1 | 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M1.03 | 2009/12/22 | 04:50 | 04:56 | 05:00 | |
| 2 | C9.23 | 2009/12/23 | 10:09 | 10:17 | 10:20 |
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| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/06 | M8.1 |
| 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 |