| Nombre de taches solaires |
Zone | Classe Magn. | Classe Tache | Position | |
|---|---|---|---|---|---|
| 14/12/2011 | 3 | 10 | BXO | N21E52 | |
| 15/12/2011 | 4 | 10 | BXO | N20E39 | |
| 18/12/2011 | 1 | 0 | AXX | N21W04 | |
| 19/12/2011 | 3 | 20 | DRO | N20W18 | |
| 20/12/2011 | 7 | 20 | CRO | N19W31 | |
| 21/12/2011 | 14 | 40 | DAI | N19W46 | |
| 22/12/2011 | 11 | 90 | DSI | N20W59 | |
| 23/12/2011 | 13 | 440 | DKO | N18W72 | |
| 24/12/2011 | 7 | 330 | DKO | N16W84 |
| B | C |
|---|---|
| 2 | 19 |
| Départ | Maximum | Fin | ||||
|---|---|---|---|---|---|---|
| 1 | C8.92 | 20/12/2011 | 22:38 | 22:50 | 23:04 | |
| 2 | C7.13 | 24/12/2011 | 11:25 | 12:36 | 13:16 | |
| 3 | C5 | 23/12/2011 | 19:12 | 19:18 | 19:25 | |
| 4 | C4.64 | 17/12/2011 | 22:47 | 22:55 | 22:58 | |
| 5 | C4.14 | 20/12/2011 | 20:04 | 20:36 | 20:57 | |
| 6 | C3.09 | 20/12/2011 | 11:47 | 11:52 | 11:54 | |
| 7 | C2.86 | 21/12/2011 | 22:37 | 22:43 | 22:47 | |
| 8 | C2.8 | 18/12/2011 | 02:00 | 02:05 | 02:08 | |
| 9 | C2.78 | 21/12/2011 | 18:07 | 18:12 | 18:17 | |
| 10 | C2.68 | 18/12/2011 | 04:59 | 05:04 | 05:07 |
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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 | 119.4 -4.6 |
| 30 derniers jours | 121.1 +6.3 |