| Nombre de taches solaires |
Zone | Classe Magn. | Classe Tache | Position | |
|---|---|---|---|---|---|
| 25/09/2017 | 1 | 180 | HSX | S09E71 | |
| 26/09/2017 | 1 | 200 | HAX | S10E59 | |
| 27/09/2017 | 1 | 180 | HAX | S11E46 | |
| 28/09/2017 | 2 | 180 | HAX | S10E31 | |
| 29/09/2017 | 7 | 130 | CAO | S09E21 | |
| 30/09/2017 | 6 | 120 | CAO | S09E08 | |
| 01/10/2017 | 5 | 110 | CSO | S11W05 | |
| 02/10/2017 | 1 | 100 | HSX | S11W18 | |
| 03/10/2017 | 1 | 110 | HSX | S10W35 | |
| 04/10/2017 | 1 | 120 | HSX | S10W47 | |
| 05/10/2017 | 1 | 130 | HSX | S10W61 | |
| 06/10/2017 | 1 | 120 | HSX | S10W74 | |
| 07/10/2017 | 1 | 120 | HSX | S11W87 | |
| 08/10/2017 | 1 | 120 | HSX | S11W0* |
| B |
|---|
| 6 |
| Départ | Maximum | Fin | ||||
|---|---|---|---|---|---|---|
| 1 | B6.2 | 26/09/2017 | 06:01 | 06:05 | 06:08 | |
| 2 | B4.74 | 30/09/2017 | 17:04 | 17:11 | 17:15 | |
| 3 | B3.2 | 29/09/2017 | 14:28 | 14:32 | 14:37 | |
| 4 | B3.15 | 27/09/2017 | 13:51 | 14:06 | 14:29 | |
| 5 | B2.78 | 29/09/2017 | 13:25 | 13:31 | 13:38 | |
| 6 | B1.61 | 05/10/2017 | 11:25 | 11:29 | 11:31 |
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| Dernière classe X | 18/01/2026 | X1.9 |
| Dernière classe M | 19/01/2026 | M1.2 |
| Dernier orage géomagnétique | 19/01/2026 | Kp9- (G4) |
| 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 | 103.8 -20.2 |
| 30 derniers jours | 109 +1.5 |