| Numero di macchie solari |
Dimensione | Classe Magn. | Classe Macchia | Posizione | |
|---|---|---|---|---|---|
| 1999/12/10 | 1 | 50 | HSX | S15E58 | |
| 1999/12/11 | 1 | 30 | HSX | S14E44 | |
| 1999/12/12 | 2 | 30 | CSO | S15E31 | |
| 1999/12/13 | 2 | 30 | CSO | S14E19 | |
| 1999/12/14 | 5 | 20 | CSO | S13E05 | |
| 1999/12/15 | 1 | 10 | HSX | S13W08 | |
| 1999/12/16 | 6 | 20 | BXO | S14W20 | |
| 1999/12/17 | 10 | 30 | BXO | S14W27 | |
| 1999/12/18 | 10 | 20 | BXO | S14W40 | |
| 1999/12/19 | 2 | 0 | AXX | S16W53 |
| C |
|---|
| 4 |
| Inizio | Massimo | Fine | ||||
|---|---|---|---|---|---|---|
| 1 | C3.21 | 1999/12/09 | 19:49 | 19:58 | 20:17 | |
| 2 | C3.17 | 1999/12/16 | 08:31 | 08:36 | 08:45 | |
| 3 | C3.01 | 1999/12/19 | 19:27 | 19:31 | 19:35 | |
| 4 | C1.67 | 1999/12/11 | 07:30 | 07:39 | 07:45 |
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| Ultimo brillamento X | 2026/04/24 | X2.5 |
| Ultimo brillamento M | 2026/05/17 | M1.4 |
| Ultima tempesta geomagnetica | 2026/05/16 | Kp6- (G2) |
| 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 | 91.4 +12.1 |
| Ultimi 30 giorni | 98.4 +8 |