Sunspot region AR13521
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2023/12/15 | 1 | 20 | HSX | N11E71 | |
| 2023/12/16 | 1 | 30 | HSX | N11E58 | |
| 2023/12/17 | 3 | 30 | HAX | N12E43 | |
| 2023/12/18 | 8 | 50 | DAO | N11E34 | |
| 2023/12/19 | 3 | 20 | CRO | N11E22 | |
| 2023/12/20 | 4 | 80 | DSO | N11E06 | |
| 2023/12/21 | 8 | 100 | DSI | N12W09 | |
| 2023/12/22 | 10 | 70 | CSI | N12W20 | |
| 2023/12/23 | 6 | 50 | CSO | N11W35 | |
| 2023/12/24 | 2 | 20 | HRX | N11W48 | |
| 2023/12/25 | 1 | 30 | HAX | N11W63 | |
| 2023/12/26 | 1 | 30 | HSX | N11W77 | |
| 2023/12/27 | 1 | 20 | HSX | N11W91 | |
| 2023/12/28 | 1 | 20 | HSX | N11W0* |
2023/12/15
2023/12/16
2023/12/17
2023/12/18
2023/12/19
2023/12/20
2023/12/21
2023/12/22
2023/12/23
2023/12/24
2023/12/25
2023/12/26
2023/12/27
2023/12/28
|
2023/12/15
2023/12/16
2023/12/17
2023/12/18
2023/12/19
2023/12/20
2023/12/21
2023/12/22
2023/12/23
2023/12/24
2023/12/25
2023/12/26
2023/12/27
2023/12/28
|
| C |
|---|
| 9 |
The top 9 solar flares from sunspot region 13521
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C8.2 | 2023/12/20 | 08:44 | 08:54 | 09:03 | |
| 2 | C7.9 | 2023/12/20 | 05:56 | 06:03 | 06:07 | |
| 3 | C7.5 | 2023/12/20 | 05:43 | 05:53 | 05:56 | |
| 4 | C7.2 | 2023/12/20 | 18:39 | 18:43 | 18:47 | |
| 5 | C2.9 | 2023/12/19 | 23:41 | 23:42 | 23:47 | |
| 6 | C2.2 | 2023/12/21 | 10:04 | 10:10 | 10:15 | |
| 7 | C2.2 | 2023/12/21 | 10:15 | 10:25 | 10:29 | |
| 8 | C1.7 | 2023/12/24 | 02:28 | 02:37 | 02:56 | |
| 9 | C1.4 | 2023/12/25 | 23:43 | 23:47 | 23:53 |
Latest news
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Space weather facts
| Last X-flare | 2026/02/04 | X4.3 |
| Last M-flare | 2026/02/04 | M1.8 |
| Last geomagnetic storm | 2026/01/28 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| February 2026 | 141.3 +17.3 |
| Last 30 days | 123.1 +14.7 |