Sunspot region AR10661
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2004/08/13 | 1 | 80 | HSX | N08E84 | |
| 2004/08/14 | 2 | 360 | DAO | N07E73 | |
| 2004/08/15 | 2 | 340 | DAO | N07E60 | |
| 2004/08/16 | 2 | 390 | DKO | N07E47 | |
| 2004/08/17 | 4 | 470 | EKO | N07E34 | |
| 2004/08/18 | 11 | 470 | DKO | N09E20 | |
| 2004/08/19 | 13 | 540 | DKO | N10E07 | |
| 2004/08/20 | 17 | 510 | EKO | N09W06 | |
| 2004/08/21 | 16 | 470 | EKO | N08W19 | |
| 2004/08/22 | 9 | 450 | DKO | N07W33 | |
| 2004/08/23 | 7 | 430 | DKO | N06W47 | |
| 2004/08/24 | 6 | 410 | DKO | N07W60 | |
| 2004/08/25 | 3 | 320 | DHO | N06W73 | |
| 2004/08/26 | 3 | 300 | DHO | N06W86 |
| B | C |
|---|---|
| 4 | 4 |
The top 8 solar flares from sunspot region 10661
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C4.7 | 2004/08/18 | 10:40 | 10:44 | 10:48 | |
| 2 | C4.39 | 2004/08/18 | 05:06 | 05:10 | 05:14 | |
| 3 | C2.71 | 2004/08/17 | 10:44 | 10:47 | 10:50 | |
| 4 | C1.97 | 2004/08/25 | 05:15 | 05:21 | 05:26 | |
| 5 | B5.49 | 2004/08/26 | 00:17 | 00:21 | 00:25 | |
| 6 | B5.37 | 2004/08/21 | 23:58 | 00:02 | 00:04 | |
| 7 | B4.67 | 2004/08/22 | 21:29 | 21:33 | 21:37 | |
| 8 | B4.47 | 2004/08/25 | 03:59 | 04:03 | 04:07 |
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Space weather facts
| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/27 | M5.1 |
| Last geomagnetic storm | 2025/12/22 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 115.5 +23.7 |
| Last 30 days | 113.8 +28 |