Sunspot region AR8551
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/05/22 | 2 | 60 | CSO | N32E62 | |
| 1999/05/23 | 3 | 50 | CSO | N33E50 | |
| 1999/05/24 | 6 | 40 | CSO | N32E36 | |
| 1999/05/25 | 9 | 70 | CSO | N32E25 | |
| 1999/05/26 | 5 | 60 | CSO | N32E10 | |
| 1999/05/27 | 5 | 50 | CSO | N31W02 | |
| 1999/05/28 | 6 | 50 | CSO | N32W14 | |
| 1999/05/29 | 1 | 20 | HSX | N32W25 | |
| 1999/05/30 | 1 | 20 | HSX | N31W37 | |
| 1999/05/31 | 3 | 10 | AXX | N30W49 | |
| 1999/06/02 | 1 | 0 | AXX | N32W77 | |
| 1999/06/03 | 1 | 0 | AXX | N32W90 |
| C |
|---|
| 8 |
The top 8 solar flares from sunspot region 8551
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C4.93 | 1999/05/23 | 14:25 | 14:40 | 14:54 | |
| 2 | C3.54 | 1999/06/02 | 07:05 | 07:10 | 07:13 | |
| 3 | C2.69 | 1999/05/23 | 10:35 | 10:43 | 10:52 | |
| 4 | C2.34 | 1999/05/24 | 08:06 | 08:13 | 08:38 | |
| 5 | C1.71 | 1999/06/02 | 10:54 | 10:57 | 11:00 | |
| 6 | C1.66 | 1999/05/30 | 06:05 | 06:12 | 06:23 | |
| 7 | C1.56 | 1999/05/24 | 06:44 | 06:48 | 06:51 | |
| 8 | C1.5 | 1999/05/24 | 13:25 | 13:28 | 13:31 |
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| Last M-flare | 2025/12/06 | M8.1 |
| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
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| Monthly mean Sunspot Number | |
|---|---|
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| December 2025 | 167.7 +75.9 |
| Last 30 days | 107.1 +13.7 |