| Nombre de taches solaires |
Zone | Classe Magn. | Classe Tache | Position | |
|---|---|---|---|---|---|
| 18/05/1999 | 1 | 10 | AXX | S21E48 | |
| 19/05/1999 | 10 | 20 | BXO | S21E35 | |
| 20/05/1999 | 8 | 20 | CRO | S19E23 | |
| 21/05/1999 | 16 | 50 | CSO | S20E08 | |
| 22/05/1999 | 14 | 100 | DAO | S20W06 | |
| 23/05/1999 | 16 | 110 | DAO | S19W19 | |
| 24/05/1999 | 11 | 70 | CAO | S20W30 | |
| 25/05/1999 | 6 | 70 | CSO | S20W47 | |
| 26/05/1999 | 3 | 50 | CSO | S20W61 | |
| 27/05/1999 | 7 | 80 | DSO | S21W71 | |
| 28/05/1999 | 7 | 60 | ESO | S21W83 |
| C |
|---|
| 1 |
| Départ | Maximum | Fin | ||||
|---|---|---|---|---|---|---|
| 1 | C3.94 | 27/05/1999 | 14:23 | 14:40 | 15:05 |
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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 | 119.6 -4.4 |
| 30 derniers jours | 122.3 +11.2 |