Sunspot region AR8447
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/01/23 | 4 | 30 | CRO | N19W20 | |
| 1999/01/24 | 3 | 10 | BXO | N19W34 | |
| 1999/01/25 | 6 | 30 | BXO | N20W46 | |
| 1999/01/26 | 3 | 30 | CSO | N19W59 | |
| 1999/01/27 | 2 | 20 | BXO | N19W73 |
| C | M |
|---|---|
| 1 | 1 |
The top 2 solar flares from sunspot region 8447
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M1.19 | 1999/01/26 | 18:36 | 18:44 | 18:54 | |
| 2 | C2.49 | 1999/01/22 | 20:50 | 20:54 | 20:57 |
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| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/01 | M2.4 |
| Last geomagnetic storm | 2025/03/27 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2025 | 154.6 +17.6 |
| April 2025 | 147 -7.6 |
| Last 30 days | 128.8 -21.8 |