Sunspot region AR12907
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2021/12/13 | 3 | 10 | BXO | S21E62 | |
| 2021/12/14 | 5 | 50 | DSC | S19E49 | |
| 2021/12/15 | 12 | 260 | DKI | S19E36 | |
| 2021/12/16 | 23 | 180 | DAI | S19E27 | |
| 2021/12/17 | 19 | 280 | DHI | S18E13 | |
| 2021/12/18 | 24 | 310 | DKI | S19W01 | |
| 2021/12/19 | 15 | 250 | DKI | S21W14 | |
| 2021/12/20 | 13 | 150 | DAI | S21W27 | |
| 2021/12/21 | 14 | 200 | DAI | S21W40 | |
| 2021/12/22 | 14 | 230 | EAI | S21W52 | |
| 2021/12/23 | 17 | 300 | EKI | S20W64 | |
| 2021/12/24 | 15 | 280 | EHI | S22W77 |
2021/12/13
2021/12/14
2021/12/15
2021/12/16
2021/12/17
2021/12/18
2021/12/19
2021/12/20
2021/12/21
2021/12/22
2021/12/23
2021/12/24
|
2021/12/13
2021/12/14
2021/12/15
2021/12/16
2021/12/17
2021/12/18
2021/12/19
2021/12/20
2021/12/21
2021/12/22
2021/12/23
2021/12/24
|
| B | C |
|---|---|
| 11 | 63 |
The top 10 solar flares from sunspot region 12907
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C9.0 | 2021/12/22 | 17:54 | 18:08 | 18:26 | |
| 2 | C8.1 | 2021/12/15 | 10:31 | 10:44 | 10:48 | |
| 3 | C6.1 | 2021/12/14 | 23:44 | 23:49 | 23:56 | |
| 4 | C5.6 | 2021/12/21 | 01:44 | 01:58 | 02:12 | |
| 5 | C5.6 | 2021/12/24 | 07:02 | 07:19 | 07:34 | |
| 6 | C5.2 | 2021/12/24 | 02:27 | 02:43 | 02:58 | |
| 7 | C4.6 | 2021/12/15 | 04:07 | 04:21 | 04:32 | |
| 8 | C4.5 | 2021/12/15 | 14:27 | 14:34 | 14:38 | |
| 9 | C4.0 | 2021/12/22 | 05:15 | 05:42 | 05:59 | |
| 10 | C3.8 | 2021/12/19 | 20:59 | 21:12 | 21:28 |
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Space weather facts
| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/08 | M1.1 |
| 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 | 162.7 +70.9 |
| Last 30 days | 108 +13.3 |