| Numero di macchie solari |
Dimensione | Classe Magn. | Classe Macchia | Posizione | |
|---|---|---|---|---|---|
| 1997/12/12 | 18 | 50 | DRO | N31W06 | |
| 1997/12/13 | 14 | 120 | DSO | N31W18 | |
| 1997/12/14 | 11 | 120 | DAO | N30W33 | |
| 1997/12/15 | 9 | 110 | DAO | N29W48 | |
| 1997/12/16 | 7 | 120 | EAO | N31W60 | |
| 1997/12/17 | 2 | 70 | ESO | N30W72 | |
| 1997/12/18 | 1 | 50 | HSX | N32W85 |
| B | C |
|---|---|
| 2 | 1 |
| Inizio | Massimo | Fine | ||||
|---|---|---|---|---|---|---|
| 1 | C1.59 | 1997/12/14 | 15:23 | 16:11 | 16:39 | |
| 2 | B5.6 | 1997/12/12 | 06:02 | 06:08 | 06:18 | |
| 3 | B5.01 | 1997/12/12 | 08:53 | 09:01 | 09:16 |
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| Ultimo brillamento X | 2025/12/08 | X1.1 |
| Ultimo brillamento M | 2025/12/27 | M5.1 |
| Ultima tempesta geomagnetica | 2025/12/22 | Kp5 (G1) |
| Giorni senza macchie | |
|---|---|
| Ultimo giorno senza macchie | 2022/06/08 |
| Media mensile Numero di Macchie Solari | |
|---|---|
| novembre 2025 | 91.8 -22.8 |
| dicembre 2025 | 114.9 +23.1 |
| Ultimi 30 giorni | 112.3 +26.4 |