| Nombre de taches solaires |
Zone | Classe Magn. | Classe Tache | Position | |
|---|---|---|---|---|---|
| 25/02/1998 | 5 | 10 | BXO | S27E17 | |
| 26/02/1998 | 7 | 60 | DAO | S26E04 | |
| 27/02/1998 | 8 | 70 | DAO | S26W09 | |
| 28/02/1998 | 9 | 30 | CAO | S26W22 | |
| 01/03/1998 | 3 | 20 | BXO | S26W33 | |
| 02/03/1998 | 5 | 20 | BXO | S26W45 | |
| 03/03/1998 | 3 | 10 | BXO | S25W56 |
| B |
|---|
| 1 |
| Départ | Maximum | Fin | ||||
|---|---|---|---|---|---|---|
| 1 | B9.86 | 26/02/1998 | 15:38 | 15:56 | 16:09 |
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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 | 119.6 -4.4 |
| 30 derniers jours | 122.3 +11.2 |