Sunspot region AR8647
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/07/26 | 6 | 110 | CAO | S18E63 | |
| 1999/07/27 | 10 | 220 | DSO | S18E51 | |
| 1999/07/28 | 10 | 150 | DAO | S18E37 | |
| 1999/07/29 | 12 | 90 | EAO | S18E24 | |
| 1999/07/30 | 17 | 50 | ESO | S18E11 | |
| 1999/07/31 | 11 | 40 | CSO | S17W03 | |
| 1999/08/01 | 8 | 40 | CSO | S18W18 | |
| 1999/08/02 | 15 | 40 | CSO | S18W34 | |
| 1999/08/03 | 17 | 140 | DAO | S18W49 | |
| 1999/08/04 | 22 | 270 | DAO | S18W63 | |
| 1999/08/05 | 12 | 350 | EAO | S19W76 | |
| 1999/08/06 | 7 | 120 | EAO | S19W87 |
| C | M | X |
|---|---|---|
| 6 | 2 | 1 |
The top 9 solar flares from sunspot region 8647
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | X2.03 | 1999/08/02 | 21:18 | 21:25 | 21:38 | |
| 2 | M1.73 | 1999/08/04 | 15:49 | 16:07 | 16:25 | |
| 3 | M1.32 | 1999/08/01 | 06:38 | 06:45 | 06:48 | |
| 4 | C8.24 | 1999/08/03 | 04:58 | 05:02 | 05:10 | |
| 5 | C7.03 | 1999/08/05 | 03:38 | 03:42 | 03:46 | |
| 6 | C6.39 | 1999/08/04 | 04:11 | 04:14 | 04:17 | |
| 7 | C5.67 | 1999/08/04 | 08:53 | 08:57 | 09:02 | |
| 8 | C3.69 | 1999/08/03 | 02:53 | 02:56 | 02:59 | |
| 9 | C2.71 | 1999/08/03 | 08:39 | 08:42 | 08:45 |
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Space weather facts
| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/04 | M6.0 |
| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 186 +94.2 |
| Last 30 days | 106.3 +12.6 |