| Nombre de taches solaires |
Zone | Classe Magn. | Classe Tache | Position | |
|---|---|---|---|---|---|
| 17/09/2001 | 3 | 130 | HSX | N12E70 | |
| 18/09/2001 | 2 | 180 | HAX | N13E57 | |
| 19/09/2001 | 3 | 200 | HAX | N12E44 | |
| 20/09/2001 | 6 | 210 | CAO | N12E30 | |
| 21/09/2001 | 9 | 210 | DAO | N12E17 | |
| 22/09/2001 | 10 | 140 | DKO | N11E04 | |
| 23/09/2001 | 6 | 110 | DAO | N12W10 | |
| 24/09/2001 | 5 | 100 | CAO | N12W23 | |
| 25/09/2001 | 5 | 80 | CSO | N12W36 | |
| 26/09/2001 | 2 | 70 | HSX | N12W50 | |
| 27/09/2001 | 1 | 70 | HSX | N12W64 | |
| 28/09/2001 | 1 | 40 | HSX | N12W77 | |
| 29/09/2001 | 1 | 30 | HRX | N12W90 |
| C | M |
|---|---|
| 2 | 1 |
| Départ | Maximum | Fin | ||||
|---|---|---|---|---|---|---|
| 1 | M1.83 | 18/09/2001 | 15:31 | 15:38 | 15:43 | |
| 2 | C6 | 21/09/2001 | 04:48 | 04:55 | 05:02 | |
| 3 | C3.59 | 21/09/2001 | 01:17 | 01:29 | 01:32 |
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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 |