| Numero di macchie solari |
Dimensione | Classe Magn. | Classe Macchia | Posizione | |
|---|---|---|---|---|---|
| 1998/04/08 | 1 | 60 | HSX | S28E74 | |
| 1998/04/09 | 10 | 170 | DAO | S28E60 | |
| 1998/04/10 | 13 | 70 | DAO | S28E49 | |
| 1998/04/11 | 18 | 60 | CAO | S28E36 | |
| 1998/04/12 | 13 | 30 | BXO | S28E23 | |
| 1998/04/13 | 12 | 30 | BXO | S28E09 | |
| 1998/04/14 | 5 | 20 | BXO | S28E00 | |
| 1998/04/15 | 6 | 10 | BXO | S29W17 | |
| 1998/04/16 | 4 | 10 | BXO | S29W31 |
| B | C |
|---|---|
| 1 | 1 |
| Inizio | Massimo | Fine | ||||
|---|---|---|---|---|---|---|
| 1 | C3.81 | 1998/04/09 | 18:10 | 18:15 | 18:19 | |
| 2 | B7.26 | 1998/04/14 | 21:36 | 21:40 | 21:44 |
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| Ultimo brillamento X | 2026/04/24 | X2.5 |
| Ultimo brillamento M | 2026/05/10 | M5.7 |
| Ultima tempesta geomagnetica | 2026/05/05 | Kp5 (G1) |
| Giorni senza macchie | |
|---|---|
| Ultimi 365 giorni | 3 giorni |
| 2026 | 3 giorni (2%) |
| Ultimo giorno senza macchie | 2026/02/24 |
| Media mensile Numero di Macchie Solari | |
|---|---|
| aprile 2026 | 79.3 -6.6 |
| maggio 2026 | 107.2 +27.9 |
| Ultimi 30 giorni | 95.2 -0.7 |