Sunspot region AR8620
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/07/04 | 1 | 40 | HAX | N22E56 | |
| 1999/07/05 | 1 | 80 | HSX | N21E42 | |
| 1999/07/06 | 4 | 90 | CSO | N20E29 | |
| 1999/07/07 | 4 | 90 | CSO | N20E16 | |
| 1999/07/08 | 2 | 110 | CSO | N20E02 | |
| 1999/07/09 | 2 | 100 | HSX | N21W10 | |
| 1999/07/10 | 3 | 80 | CAO | N21W22 | |
| 1999/07/11 | 3 | 60 | CAO | N22W34 | |
| 1999/07/12 | 4 | 60 | CAO | N22W48 | |
| 1999/07/13 | 3 | 40 | CSO | N22W61 | |
| 1999/07/14 | 5 | 40 | CSO | N22W75 |
| C |
|---|
| 1 |
The top 1 solar flares from sunspot region 8620
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C1.69 | 1999/07/06 | 08:03 | 08:06 | 08:10 |
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Space weather facts
| Last X-flare | 2026/02/04 | X4.21 |
| Last M-flare | 2026/03/18 | M2.7 |
| Last geomagnetic storm | 2026/03/23 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (4%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2026 | 78.2 -34.3 |
| March 2026 | 79.2 +1 |
| Last 30 days | 75.6 -9.1 |