Sunspot region AR8462
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/02/13 | 7 | 30 | CRO | N20E34 | |
| 1999/02/14 | 16 | 50 | DSO | N21E21 | |
| 1999/02/15 | 21 | 80 | DAO | N20E07 | |
| 1999/02/16 | 17 | 130 | DAO | N19W06 | |
| 1999/02/17 | 15 | 150 | EAO | N18W20 | |
| 1999/02/18 | 9 | 170 | DAO | N20W27 | |
| 1999/02/19 | 6 | 160 | DAO | N20W40 | |
| 1999/02/20 | 6 | 160 | DAO | N20W50 | |
| 1999/02/21 | 5 | 130 | CAO | N21W65 | |
| 1999/02/22 | 1 | 10 | AXX | N20W79 | |
| 1999/02/23 | 1 | 10 | HRX | N21W90 |
| C | M |
|---|---|
| 19 | 2 |
The top 10 solar flares from sunspot region 8462
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M1.9 | 1999/02/21 | 13:03 | 13:45 | 14:08 | |
| 2 | M1.05 | 1999/02/15 | 09:18 | 09:27 | 09:34 | |
| 3 | C9.86 | 1999/02/16 | 17:31 | 17:42 | 17:55 | |
| 4 | C7.67 | 1999/02/16 | 21:16 | 21:21 | 21:23 | |
| 5 | C5.84 | 1999/02/15 | 16:18 | 16:38 | 16:55 | |
| 6 | C4.86 | 1999/02/14 | 02:35 | 02:44 | 03:03 | |
| 7 | C4.81 | 1999/02/14 | 22:40 | 22:52 | 23:03 | |
| 8 | C3.97 | 1999/02/13 | 19:48 | 20:02 | 20:17 | |
| 9 | C3.91 | 1999/02/15 | 21:21 | 21:40 | 21:51 | |
| 10 | C3.81 | 1999/02/13 | 19:21 | 19:26 | 19:30 |
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| Last M-flare | 2025/12/12 | M1.1 |
| Last geomagnetic storm | 2025/12/12 | Kp5 (G1) |
| Spotless days | |
|---|---|
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| Monthly mean Sunspot Number | |
|---|---|
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| December 2025 | 131.8 +40 |
| Last 30 days | 108.3 +14.5 |