| Nombre de taches solaires |
Zone | Classe Magn. | Classe Tache | Position | |
|---|---|---|---|---|---|
| 14/10/1998 | 5 | 20 | BXO | N23W47 | |
| 15/10/1998 | 2 | 30 | BXO | N23W59 | |
| 16/10/1998 | 2 | 10 | BXO | N24W72 | |
| 17/10/1998 | 1 | 10 | AXX | N25W84 |
| B | C |
|---|---|
| 1 | 1 |
| Départ | Maximum | Fin | ||||
|---|---|---|---|---|---|---|
| 1 | C3.8 | 15/10/1998 | 00:40 | 00:47 | 00:52 | |
| 2 | B9.74 | 13/10/1998 | 18:39 | 18:44 | 18:50 |
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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 | 114.4 -9.6 |
| 30 derniers jours | 118.1 +9.1 |