Sunspot region AR11172
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2011/03/12 | 2 | 10 | BXO | N11E72 | |
| 2011/03/13 | 2 | 20 | BXO | N12E58 | |
| 2011/03/14 | 3 | 20 | BXO | N12E44 | |
| 2011/03/15 | 4 | 10 | BXO | N14E30 | |
| 2011/03/16 | 2 | 10 | BXO | N10E17 | |
| 2011/03/17 | 1 | 0 | AXX | N11E02 |
| B | C |
|---|---|
| 4 | 3 |
The top 7 solar flares from sunspot region 11172
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C2.29 | 2011/03/12 | 16:26 | 16:37 | 16:45 | |
| 2 | C2 | 2011/03/14 | 08:07 | 08:15 | 08:25 | |
| 3 | C1.41 | 2011/03/14 | 07:05 | 07:11 | 07:18 | |
| 4 | B9.86 | 2011/03/15 | 08:07 | 08:11 | 08:14 | |
| 5 | B4.86 | 2011/03/19 | 20:13 | 20:16 | 20:19 | |
| 6 | B4.14 | 2011/03/19 | 21:39 | 21:44 | 21:47 | |
| 7 | B3.86 | 2011/03/19 | 16:21 | 16:34 | 16:52 |
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Space weather facts
| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/04 | M6.0 |
| 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 | 175.4 +83.6 |
| Last 30 days | 107.3 +14.6 |