| Nombre de taches solaires |
Zone | Classe Magn. | Classe Tache | Position | |
|---|---|---|---|---|---|
| 11/09/2017 | 1 | 100 | HSX | N09E66 | |
| 12/09/2017 | 1 | 80 | HSX | N09E53 | |
| 13/09/2017 | 1 | 140 | HSX | N09E39 | |
| 14/09/2017 | 1 | 120 | HSX | N09E26 | |
| 15/09/2017 | 1 | 120 | HSX | N08E13 | |
| 16/09/2017 | 3 | 80 | HSX | N08W00 | |
| 17/09/2017 | 3 | 90 | HSX | N08W13 | |
| 18/09/2017 | 3 | 80 | HAX | N08W27 | |
| 19/09/2017 | 2 | 80 | HSX | N08W40 | |
| 20/09/2017 | 1 | 50 | HSX | N08W53 | |
| 21/09/2017 | 1 | 60 | HSX | N08W67 | |
| 22/09/2017 | 1 | 60 | HSX | N07W80 | |
| 23/09/2017 | 1 | 60 | HSX | N07W93 | |
| 24/09/2017 | 1 | 60 | HSX | N07W0* |
| B | C |
|---|---|
| 8 | 3 |
| Départ | Maximum | Fin | ||||
|---|---|---|---|---|---|---|
| 1 | C4.35 | 12/09/2017 | 07:22 | 07:29 | 07:34 | |
| 2 | C2.37 | 12/09/2017 | 19:03 | 19:20 | 19:28 | |
| 3 | C1.17 | 20/09/2017 | 19:26 | 19:32 | 19:37 | |
| 4 | B4.63 | 12/09/2017 | 15:28 | 15:35 | 15:39 | |
| 5 | B2.6 | 01/09/2021 | 04:27 | 04:33 | 04:37 | |
| 6 | B2.11 | 12/09/2017 | 15:54 | 15:59 | 16:06 | |
| 7 | B1.9 | 01/09/2021 | 03:03 | 03:10 | 03:16 | |
| 8 | B1.71 | 13/09/2017 | 07:39 | 07:48 | 08:09 | |
| 9 | B1.27 | 13/09/2017 | 05:38 | 05:41 | 05:51 | |
| 10 | B1.08 | 20/09/2017 | 20:00 | 20:03 | 20:09 |
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| Dernière classe X | 08/12/2025 | X1.1 |
| Dernière classe M | 19/12/2025 | M1.0 |
| Dernier orage géomagnétique | 12/12/2025 | Kp5 (G1) |
| Jours sans taches solaires | |
|---|---|
| Dernier jour sans taches solaires | 08/06/2022 |
| Nombre mensuel moyen de taches solaires | |
|---|---|
| novembre 2025 | 91.8 -22.8 |
| décembre 2025 | 125.7 +33.9 |
| 30 derniers jours | 109.3 +18.1 |