| Nombre de taches solaires |
Zone | Classe Magn. | Classe Tache | Position | |
|---|---|---|---|---|---|
| 19/09/2011 | 2 | 60 | DSO | N21E77 | |
| 20/09/2011 | 5 | 110 | DAO | N20E63 | |
| 21/09/2011 | 7 | 130 | DSO | N19E52 | |
| 22/09/2011 | 10 | 210 | ESO | N20E41 | |
| 23/09/2011 | 12 | 120 | ESO | N19E29 | |
| 24/09/2011 | 14 | 110 | DSO | N20E13 | |
| 25/09/2011 | 16 | 90 | FSO | N18W01 | |
| 26/09/2011 | 18 | 90 | ESI | N18W13 | |
| 27/09/2011 | 15 | 40 | CSO | N17W23 | |
| 28/09/2011 | 1 | 20 | HSX | N18W36 | |
| 29/09/2011 | 8 | 30 | CRO | N18W51 | |
| 30/09/2011 | 1 | 20 | HSX | N16W64 | |
| 01/10/2011 | 1 | 20 | HSX | N16W76 |
| C |
|---|
| 8 |
| Départ | Maximum | Fin | ||||
|---|---|---|---|---|---|---|
| 1 | C9.96 | 19/09/2011 | 15:35 | 15:41 | 15:47 | |
| 2 | C5.58 | 21/09/2011 | 11:17 | 11:24 | 11:28 | |
| 3 | C4.24 | 18/09/2011 | 07:32 | 07:35 | 07:37 | |
| 4 | C3.98 | 21/09/2011 | 00:55 | 01:07 | 01:14 | |
| 5 | C3.58 | 20/09/2011 | 12:44 | 13:53 | 14:22 | |
| 6 | C2.91 | 20/09/2011 | 06:44 | 06:56 | 07:00 | |
| 7 | C2.55 | 20/09/2011 | 12:28 | 12:34 | 12:38 | |
| 8 | C1.93 | 19/09/2011 | 18:34 | 18:47 | 18:54 |
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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 |