| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2009/12/10 | 3 | 10 | BXO | N18E73 | |
| 2009/12/11 | 3 | 10 | BXO | N20E59 | |
| 2009/12/12 | 3 | 20 | BXO | N20E45 | |
| 2009/12/13 | 2 | 20 | BXO | N20E32 | |
| 2009/12/14 | 4 | 20 | BXO | N19E16 | |
| 2009/12/15 | 4 | 10 | BXO | N20E03 | |
| 2009/12/16 | 2 | 10 | BXO | N19W14 |
| B |
|---|
| 2 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | B2.25 | 2009/12/13 | 18:38 | 18:43 | 18:45 | |
| 2 | B1.5 | 2009/12/13 | 19:59 | 20:02 | 20:05 |
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| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/31 | M7.11 |
| Last geomagnetic storm | 2025/12/22 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| January 2026 | 120 -4 |
| Last 30 days | 114.5 +16.4 |