Sunspot region AR8542
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/05/13 | 1 | 30 | HSX | S19E58 | |
| 1999/05/14 | 1 | 30 | HSX | S19E44 | |
| 1999/05/15 | 1 | 70 | HSX | S19E32 | |
| 1999/05/16 | 1 | 40 | HSX | S19E18 | |
| 1999/05/17 | 1 | 30 | HSX | S19E06 | |
| 1999/05/18 | 1 | 40 | HSX | S19W06 | |
| 1999/05/19 | 1 | 30 | HSX | S19W20 | |
| 1999/05/20 | 3 | 30 | CSO | S18W32 | |
| 1999/05/21 | 1 | 30 | HSX | S18W45 | |
| 1999/05/22 | 1 | 30 | HSX | S18W59 | |
| 1999/05/23 | 1 | 30 | HSX | S20W72 | |
| 1999/05/24 | 1 | 10 | AXX | S20W85 |
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Space weather facts
| Last X-flare | 2026/02/04 | X4.3 |
| Last M-flare | 2026/02/05 | M1.1 |
| 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 | 123.9 +16.5 |