Sunspot region AR8501
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/03/28 | 2 | 10 | BXO | N28E66 | |
| 1999/03/29 | 4 | 40 | CSO | N29E55 | |
| 1999/03/30 | 3 | 40 | CSO | N28E42 | |
| 1999/03/31 | 2 | 20 | HSX | N27E29 | |
| 1999/04/01 | 1 | 10 | AXX | N25E16 | |
| 1999/04/02 | 2 | 10 | BXO | N27E05 |
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Space weather facts
| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/28 | M4.3 |
| Last geomagnetic storm | 2025/12/22 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 115.5 +23.7 |
| Last 30 days | 115.2 +29.6 |