Sunspot region AR8617
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/07/03 | 6 | 10 | BXO | N14W28 | |
| 1999/07/04 | 12 | 100 | DAO | N14W42 | |
| 1999/07/05 | 14 | 190 | DAO | N14W57 | |
| 1999/07/06 | 6 | 150 | DAO | N12W69 | |
| 1999/07/07 | 5 | 100 | DAO | N13W82 | |
| 1999/07/08 | 3 | 90 | DAO | N14W94 |
| M |
|---|
| 1 |
The top 1 solar flares from sunspot region 8617
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M1.1 | 1999/07/05 | 01:20 | 01:31 | 01:46 |
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Space weather facts
| Last X-flare | 2026/03/30 | X1.5 |
| Last M-flare | 2026/04/09 | M1.0 |
| Last geomagnetic storm | 2026/04/03 | Kp7- (G3) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (3%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2026 | 85.9 +7.7 |
| April 2026 | 114.3 +28.4 |
| Last 30 days | 102.4 +48.5 |
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