Sunspot region AR10540
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2004/01/13 | 6 | 60 | HHX | S11E76 | |
| 2004/01/14 | 7 | 500 | EAO | S11E68 | |
| 2004/01/15 | 4 | 180 | EAO | S13E59 | |
| 2004/01/16 | 10 | 300 | ESO | S13E43 | |
| 2004/01/17 | 13 | 350 | EAO | S13E28 | |
| 2004/01/18 | 9 | 350 | ESO | S14E15 | |
| 2004/01/19 | 36 | 330 | FKO | S14E02 | |
| 2004/01/20 | 30 | 300 | FKO | S14W10 | |
| 2004/01/21 | 23 | 220 | EAO | S14W22 | |
| 2004/01/22 | 22 | 220 | ESO | S14W35 | |
| 2004/01/23 | 5 | 100 | ESO | S14W48 | |
| 2004/01/24 | 3 | 80 | CSO | S14W61 | |
| 2004/01/25 | 1 | 110 | HSX | S14W81 | |
| 2004/01/26 | 1 | 60 | HSX | S15W91 |
| B | C | M |
|---|---|---|
| 11 | 17 | 6 |
The top 10 solar flares from sunspot region 10540
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M8.82 | 2004/01/20 | 07:29 | 07:43 | 07:47 | |
| 2 | M7.26 | 2004/01/17 | 17:35 | 17:50 | 17:59 | |
| 3 | M2.11 | 2004/01/18 | 00:07 | 00:17 | 00:21 | |
| 4 | M1.54 | 2004/01/19 | 05:25 | 05:32 | 05:35 | |
| 5 | M1.52 | 2004/01/19 | 12:30 | 12:40 | 12:46 | |
| 6 | M1.18 | 2004/01/19 | 19:54 | 20:02 | 20:08 | |
| 7 | C4.7 | 2004/01/15 | 06:20 | 06:32 | 06:37 | |
| 8 | C2.57 | 2004/01/19 | 02:26 | 02:31 | 02:35 | |
| 9 | C2.37 | 2004/01/17 | 03:35 | 03:48 | 04:00 | |
| 10 | C2.24 | 2004/01/17 | 12:43 | 12:49 | 12:54 |
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| Last X-flare | 2026/02/04 | X4.3 |
| Last M-flare | 2026/02/16 | M2.4 |
| Last geomagnetic storm | 2026/02/15 | Kp5+ (G1) |
| Spotless days | |
|---|---|
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| Monthly mean Sunspot Number | |
|---|---|
| January 2026 | 112.6 -11.4 |
| February 2026 | 109 -3.6 |
| Last 30 days | 126.1 +25.9 |