| Nombre de taches solaires |
Zone | Classe Magn. | Classe Tache | Position | |
|---|---|---|---|---|---|
| 26/08/2011 | 1 | 120 | HSX | N14E75 | |
| 27/08/2011 | 1 | 90 | HSX | N13E61 | |
| 28/08/2011 | 3 | 120 | HSX | N13E47 | |
| 29/08/2011 | 3 | 80 | CSO | N13E34 | |
| 30/08/2011 | 6 | 100 | CSO | N13E22 | |
| 31/08/2011 | 2 | 80 | HSX | N13E07 | |
| 01/09/2011 | 1 | 80 | HSX | N13W06 | |
| 02/09/2011 | 3 | 60 | HAX | N13W19 | |
| 03/09/2011 | 4 | 60 | HSX | N14W32 | |
| 04/09/2011 | 4 | 30 | HSX | N13W45 |
| B | C |
|---|---|
| 1 | 2 |
| Départ | Maximum | Fin | ||||
|---|---|---|---|---|---|---|
| 1 | C1.36 | 25/08/2011 | 16:45 | 16:52 | 17:01 | |
| 2 | C1.28 | 26/08/2011 | 13:30 | 13:33 | 13:36 | |
| 3 | B9 | 26/08/2011 | 15:19 | 15:26 | 15:34 |
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| Dernière classe X | 18/01/2026 | X1.9 |
| Dernière classe M | 21/01/2026 | M3.4 |
| Dernier orage géomagnétique | 22/01/2026 | Kp5+ (G1) |
| Jours sans taches solaires | |
|---|---|
| Dernier jour sans taches solaires | 08/06/2022 |
| Nombre mensuel moyen de taches solaires | |
|---|---|
| décembre 2025 | 124 +32.2 |
| janvier 2026 | 119.1 -4.9 |
| 30 derniers jours | 122 +10.9 |