Sunspot region AR8517
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/04/17 | 4 | 20 | BXO | N20W21 | |
| 1999/04/18 | 3 | 30 | CSO | N22W36 | |
| 1999/04/19 | 6 | 30 | CRO | N22W51 | |
| 1999/04/20 | 5 | 70 | DSO | N22W63 | |
| 1999/04/21 | 3 | 100 | DSO | N22W77 | |
| 1999/04/22 | 1 | 40 | HSX | N24W88 |
| B | C |
|---|---|
| 3 | 1 |
The top 4 solar flares from sunspot region 8517
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C1.1 | 1999/04/18 | 21:12 | 21:19 | 21:23 | |
| 2 | B8.36 | 1999/04/21 | 00:19 | 00:22 | 00:27 | |
| 3 | B6.76 | 1999/04/21 | 16:46 | 16:50 | 16:52 | |
| 4 | B5.23 | 1999/04/21 | 06:02 | 06:05 | 06:07 |
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Space weather facts
| Last X-flare | 2024/11/06 | X2.39 |
| Last M-flare | 2024/11/13 | M1.7 |
| Last geomagnetic storm | 2024/11/10 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| October 2024 | 166.4 +25 |
| November 2024 | 166 -0.4 |
| Last 30 days | 163.2 +18.4 |