Sunspot region AR12857
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2021/08/14 | 2 | 10 | BXO | N18W00 | |
| 2021/08/15 | 2 | 10 | BXO | N18W14 | |
| 2021/08/16 | 4 | 30 | DRO | N17W27 | |
| 2021/08/17 | 3 | 10 | BXO | N17W41 | |
| 2021/08/18 | 1 | 10 | AXX | N17W55 | |
| 2021/08/19 | 1 | 10 | AXX | N14W70 |
2021/08/14
2021/08/15
2021/08/16
2021/08/17
2021/08/18
2021/08/19
|
2021/08/14
2021/08/15
2021/08/16
2021/08/17
2021/08/18
2021/08/19
|
| B |
|---|
| 2 |
The top 2 solar flares from sunspot region 12857
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | B3.4 | 2021/08/16 | 07:05 | 07:11 | 07:16 | |
| 2 | B1.2 | 2021/08/16 | 09:15 | 09:22 | 09:32 |
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Space weather facts
| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/12 | M1.1 |
| Last geomagnetic storm | 2025/12/12 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 152.4 +60.6 |
| Last 30 days | 108.3 +9.8 |