Sunspot region AR8539
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/05/08 | 6 | 30 | BXO | N13E45 | |
| 1999/05/09 | 6 | 50 | DSO | N14E31 | |
| 1999/05/10 | 4 | 20 | BXO | N14E16 | |
| 1999/05/11 | 2 | 10 | BXO | N13E03 | |
| 1999/05/12 | 2 | 10 | BXO | N13W12 |
| M |
|---|
| 1 |
The top 1 solar flares from sunspot region 8539
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M3.6 | 1999/05/10 | 05:22 | 05:31 | 05:37 |
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
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Space weather facts
| Last X-flare | 2026/02/04 | X4.3 |
| Last M-flare | 2026/02/05 | M1.8 |
| Last geomagnetic storm | 2026/01/28 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| February 2026 | 141.3 +17.3 |
| Last 30 days | 123.1 +14.7 |