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 |
Latest news
Sunday, 1 February 2026
Complex sunspot region 4366
Monday, 19 January 2026
CME impact! S4 solar radiation storm
Sunday, 18 January 2026
X1.9 solar flare with earth-directed CME
Latest forum messages
Feb 8-9 CMEs 28Current Farside Activity 374Yes, we really went to the moon before. 4Do the high-resolution sunspot counts point to more complex sunspots? 63AR4366 1027
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Space weather facts
| Last X-flare | 2026/02/04 | X4.3 |
| Last M-flare | 2026/02/12 | M1.4 |
| Last geomagnetic storm | 2026/02/05 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| January 2026 | 112.6 -11.4 |
| February 2026 | 125.3 +12.7 |
| Last 30 days | 130.4 +32.7 |