| Numero di macchie solari |
Dimensione | Classe Magn. | Classe Macchia | Posizione | |
|---|---|---|---|---|---|
| 1999/12/07 | 4 | 20 | BXO | N09E47 | |
| 1999/12/08 | 4 | 20 | CRO | N10E35 | |
| 1999/12/09 | 6 | 20 | CSO | N11E20 | |
| 1999/12/10 | 10 | 50 | DSO | N11E07 | |
| 1999/12/11 | 14 | 90 | DAO | N12W07 | |
| 1999/12/12 | 16 | 40 | CRO | N13W20 | |
| 1999/12/13 | 7 | 10 | BXO | N12W35 | |
| 1999/12/14 | 3 | 0 | BXO | N12W49 | |
| 1999/12/15 | 1 | 0 | AXX | N15W69 |
| C |
|---|
| 4 |
| Inizio | Massimo | Fine | ||||
|---|---|---|---|---|---|---|
| 1 | C4.13 | 1999/12/11 | 03:22 | 03:33 | 03:45 | |
| 2 | C3.96 | 1999/12/08 | 02:29 | 02:46 | 03:05 | |
| 3 | C1.71 | 1999/12/07 | 16:10 | 16:14 | 16:18 | |
| 4 | C1.59 | 1999/12/08 | 06:20 | 06:24 | 06:28 |
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| Ultimo brillamento X | 2026/04/24 | X2.5 |
| Ultimo brillamento M | 2026/05/29 | M1.1 |
| 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 | 96.6 +17.3 |
| Ultimi 30 giorni | 97.8 +4.4 |