Sunspot region AR11387
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2011/12/26 | 3 | 30 | DAO | S22W28 | |
| 2011/12/27 | 17 | 130 | DAI | S22W42 | |
| 2011/12/28 | 17 | 290 | DKI | S21W57 | |
| 2011/12/29 | 14 | 290 | DKI | S21W70 | |
| 2011/12/30 | 5 | 170 | DAO | S19W83 |
| C | M |
|---|---|
| 9 | 5 |
The top 10 solar flares from sunspot region 11387
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M5.77 | 2011/12/25 | 18:11 | 18:16 | 18:20 | |
| 2 | M3.43 | 2011/12/26 | 20:12 | 20:30 | 20:36 | |
| 3 | M2.18 | 2011/12/26 | 02:13 | 02:27 | 02:36 | |
| 4 | M1.22 | 2011/12/25 | 11:20 | 11:26 | 11:31 | |
| 5 | M1.1 | 2011/12/25 | 20:23 | 20:29 | 20:33 | |
| 6 | C9.3 | 2011/12/28 | 16:36 | 16:40 | 16:44 | |
| 7 | C8.93 | 2011/12/27 | 11:59 | 12:07 | 12:34 | |
| 8 | C7.98 | 2011/12/25 | 08:49 | 08:55 | 09:01 | |
| 9 | C5.75 | 2011/12/27 | 09:17 | 09:23 | 09:26 | |
| 10 | C5.53 | 2011/12/27 | 08:11 | 08:22 | 08:32 |
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| Last M-flare | 2025/02/21 | M1.4 |
| Last geomagnetic storm | 2025/02/19 | Kp5 (G1) |
| Spotless days | |
|---|---|
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| Monthly mean Sunspot Number | |
|---|---|
| January 2025 | 137 -17.5 |
| February 2025 | 151.4 +14.4 |
| Last 30 days | 149 -14 |