| Nombre de taches solaires |
Zone | Classe Magn. | Classe Tache | Position | |
|---|---|---|---|---|---|
| 04/09/1997 | 4 | 70 | CRO | S28E55 | |
| 05/09/1997 | 7 | 200 | DSO | S27E41 | |
| 06/09/1997 | 11 | 300 | DKO | S27E28 | |
| 07/09/1997 | 11 | 300 | DAO | S27E15 | |
| 08/09/1997 | 14 | 360 | DAI | S28E04 | |
| 09/09/1997 | 19 | 450 | DAI | S28W09 | |
| 10/09/1997 | 15 | 540 | DKO | S28W22 | |
| 11/09/1997 | 19 | 710 | DKO | S28W35 | |
| 12/09/1997 | 11 | 600 | DKO | S28W48 | |
| 13/09/1997 | 12 | 340 | EKO | S27W59 | |
| 14/09/1997 | 7 | 290 | DAO | S28W73 | |
| 15/09/1997 | 1 | 60 | HSX | S27W85 |
| B | C | M |
|---|---|---|
| 2 | 2 | 1 |
| Départ | Maximum | Fin | ||||
|---|---|---|---|---|---|---|
| 1 | M1.36 | 08/09/1997 | 19:27 | 19:40 | 19:48 | |
| 2 | C3.94 | 14/09/1997 | 02:50 | 02:55 | 02:58 | |
| 3 | C1.02 | 09/09/1997 | 14:01 | 14:04 | 14:08 | |
| 4 | B8.36 | 09/09/1997 | 13:51 | 13:52 | 13:56 | |
| 5 | B4.09 | 04/09/1997 | 23:13 | 23:16 | 23:18 |
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| Dernière classe X | 18/01/2026 | X1.9 |
| Dernière classe M | 21/01/2026 | M3.4 |
| Dernier orage géomagnétique | 21/01/2026 | Kp7+ (G3) |
| 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 | 110 -14 |
| 30 derniers jours | 114.8 +6.7 |