Sunspot region AR8729
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/10/10 | 8 | 40 | CRO | N11E67 | |
| 1999/10/11 | 14 | 60 | BXO | N12E58 | |
| 1999/10/12 | 14 | 30 | BXO | N12E44 | |
| 1999/10/13 | 16 | 90 | FAO | N12E30 | |
| 1999/10/14 | 30 | 110 | CRO | N11E17 | |
| 1999/10/15 | 15 | 30 | CAO | N12E03 | |
| 1999/10/16 | 8 | 20 | CAO | N12W12 | |
| 1999/10/17 | 9 | 20 | BXO | N13W25 | |
| 1999/10/18 | 3 | 10 | BXO | N14W41 | |
| 1999/10/19 | 1 | 0 | AXX | N16W49 |
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Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/01 | M2.5 |
| Last geomagnetic storm | 2025/03/27 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2025 | 134.2 -20.4 |
| April 2025 | 143 +8.8 |
| Last 30 days | 130.4 -16.1 |