| Nombre de taches solaires |
Zone | Classe Magn. | Classe Tache | Position | |
|---|---|---|---|---|---|
| 04/09/1998 | 2 | 100 | DSO | N19E73 | |
| 05/09/1998 | 3 | 160 | ESO | N18E60 | |
| 06/09/1998 | 6 | 70 | DSO | N21E50 | |
| 07/09/1998 | 11 | 80 | DSO | N22E39 | |
| 08/09/1998 | 15 | 80 | DSO | N22E25 | |
| 09/09/1998 | 17 | 90 | DAO | N22E12 | |
| 10/09/1998 | 8 | 20 | BXO | N21W01 | |
| 11/09/1998 | 5 | 20 | BXO | N22W12 | |
| 12/09/1998 | 4 | 10 | CSO | N21W27 |
| C |
|---|
| 9 |
| Départ | Maximum | Fin | ||||
|---|---|---|---|---|---|---|
| 1 | C3.59 | 06/09/1998 | 18:50 | 19:20 | 19:37 | |
| 2 | C3.19 | 05/09/1998 | 07:49 | 08:05 | 08:30 | |
| 3 | C3.1 | 05/09/1998 | 12:48 | 13:00 | 13:16 | |
| 4 | C2.26 | 05/09/1998 | 14:04 | 14:17 | 14:28 | |
| 5 | C1.94 | 13/09/1998 | 12:59 | 13:06 | 13:21 | |
| 6 | C1.86 | 05/09/1998 | 22:04 | 22:08 | 22:12 | |
| 7 | C1.83 | 14/09/1998 | 04:42 | 04:52 | 05:03 | |
| 8 | C1.77 | 04/09/1998 | 14:50 | 14:57 | 15:02 | |
| 9 | C1.69 | 06/09/1998 | 15:52 | 15:57 | 16:08 |
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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 | 117.9 -6.1 |
| 30 derniers jours | 121.2 +12.1 |