| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1997/09/22 | 2 | 10 | BXO | S28E53 | |
| 1997/09/23 | 13 | 140 | CSO | S28E38 | |
| 1997/09/24 | 15 | 230 | DAO | S28E24 | |
| 1997/09/25 | 25 | 260 | EAI | S28E10 | |
| 1997/09/26 | 25 | 290 | EAI | S28W03 | |
| 1997/09/27 | 18 | 250 | ESO | S29W16 | |
| 1997/09/28 | 12 | 240 | DAO | S29W30 | |
| 1997/09/29 | 13 | 260 | DAO | S29W41 | |
| 1997/09/30 | 5 | 210 | DAO | S29W55 | |
| 1997/10/01 | 4 | 200 | CAO | S29W67 | |
| 1997/10/02 | 1 | 80 | HAX | S29W84 |
| B | C | M |
|---|---|---|
| 7 | 13 | 3 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M8.14 | 1997/09/24 | 02:43 | 02:48 | 02:52 | |
| 2 | M4.1 | 1997/09/24 | 10:57 | 11:06 | 11:10 | |
| 3 | M1.1 | 1997/09/24 | 18:24 | 18:34 | 18:45 | |
| 4 | C9.69 | 1997/09/25 | 11:40 | 11:49 | 11:55 | |
| 5 | C6.83 | 1997/09/22 | 18:06 | 18:17 | 18:24 | |
| 6 | C6.31 | 1997/09/22 | 14:10 | 14:16 | 14:26 | |
| 7 | C6.07 | 1997/09/24 | 05:23 | 05:35 | 05:38 | |
| 8 | C5.89 | 1997/09/26 | 03:12 | 03:17 | 03:20 | |
| 9 | C3.64 | 1997/09/25 | 03:17 | 03:28 | 03:39 | |
| 10 | C3.54 | 1997/09/29 | 16:20 | 16:24 | 16:27 |
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| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/04 | M6.0 |
| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 186 +94.2 |
| Last 30 days | 106.3 +12.6 |