| Nombre de taches solaires |
Zone | Classe Magn. | Classe Tache | Position | |
|---|---|---|---|---|---|
| 21/12/2011 | 4 | 90 | DAO | N12E61 | |
| 22/12/2011 | 7 | 210 | CAO | N14E52 | |
| 23/12/2011 | 17 | 300 | DKO | N12E37 | |
| 24/12/2011 | 12 | 500 | DHO | N13E25 | |
| 25/12/2011 | 13 | 480 | EHO | N13E12 | |
| 26/12/2011 | 7 | 330 | DHI | N13W00 | |
| 27/12/2011 | 10 | 330 | DHI | N13W14 | |
| 28/12/2011 | 9 | 350 | DHO | N12W27 | |
| 29/12/2011 | 10 | 350 | CKO | N12W42 | |
| 30/12/2011 | 5 | 340 | CKO | N12W55 | |
| 31/12/2011 | 3 | 310 | CHO | N12W70 |
| C |
|---|
| 8 |
| Départ | Maximum | Fin | ||||
|---|---|---|---|---|---|---|
| 1 | C8.24 | 26/12/2011 | 11:23 | 11:50 | 12:18 | |
| 2 | C3.71 | 21/12/2011 | 10:34 | 10:38 | 10:41 | |
| 3 | C3.33 | 28/12/2011 | 20:53 | 21:07 | 21:10 | |
| 4 | C3.12 | 21/12/2011 | 11:02 | 11:05 | 11:07 | |
| 5 | C2.89 | 21/12/2011 | 06:56 | 06:59 | 07:03 | |
| 6 | C2.87 | 21/12/2011 | 13:02 | 13:07 | 13:09 | |
| 7 | C2.15 | 23/12/2011 | 10:09 | 10:14 | 10:17 | |
| 8 | C1.88 | 21/12/2011 | 12:31 | 12:35 | 12:37 |
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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 |