| Nombre de taches solaires |
Zone | Classe Magn. | Classe Tache | Position | |
|---|---|---|---|---|---|
| 07/09/1998 | 1 | 80 | HSX | N25E74 | |
| 08/09/1998 | 1 | 120 | HSX | N24E63 | |
| 09/09/1998 | 6 | 100 | CSO | N24E51 | |
| 10/09/1998 | 12 | 160 | ESO | N26E41 | |
| 11/09/1998 | 15 | 190 | DAO | N26E24 | |
| 12/09/1998 | 20 | 180 | CAO | N25E14 | |
| 13/09/1998 | 25 | 160 | EAI | N25E02 | |
| 14/09/1998 | 23 | 180 | EAI | N25W12 | |
| 15/09/1998 | 21 | 100 | EAO | N26W23 | |
| 16/09/1998 | 12 | 50 | CRO | N25W34 | |
| 17/09/1998 | 3 | 20 | BXO | N26W45 | |
| 18/09/1998 | 3 | 10 | BXO | N27W58 | |
| 19/09/1998 | 2 | 10 | BXO | N22W79 |
| C |
|---|
| 3 |
| Départ | Maximum | Fin | ||||
|---|---|---|---|---|---|---|
| 1 | C2.46 | 09/09/1998 | 17:33 | 17:38 | 17:54 | |
| 2 | C1.66 | 12/09/1998 | 12:49 | 12:57 | 13:07 | |
| 3 | C1.22 | 12/09/1998 | 14:16 | 14:25 | 14:31 |
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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 | 118.7 -5.3 |
| 30 derniers jours | 120.4 +5.6 |