Sunspot region AR8458
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/02/09 | 2 | 250 | HHX | S23E76 | |
| 1999/02/10 | 3 | 390 | HHX | S22E65 | |
| 1999/02/11 | 7 | 640 | DHO | S19E55 | |
| 1999/02/12 | 9 | 660 | DKO | S22E42 | |
| 1999/02/13 | 14 | 650 | DKO | S23E29 | |
| 1999/02/14 | 16 | 560 | DKO | S22E16 | |
| 1999/02/15 | 30 | 590 | DKO | S22E03 | |
| 1999/02/16 | 25 | 640 | EKC | S22W09 | |
| 1999/02/17 | 13 | 610 | DKI | S22W23 | |
| 1999/02/18 | 8 | 580 | DKO | S23W36 | |
| 1999/02/19 | 6 | 590 | DHO | S22W48 | |
| 1999/02/20 | 8 | 610 | DKO | S23W61 | |
| 1999/02/21 | 9 | 560 | DKO | S22W74 | |
| 1999/02/22 | 1 | 360 | HHX | S23W86 |
| C | M |
|---|---|
| 9 | 1 |
The top 10 solar flares from sunspot region 8458
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M4.64 | 1999/02/16 | 02:49 | 03:12 | 03:45 | |
| 2 | C7.59 | 1999/02/14 | 14:11 | 14:25 | 14:44 | |
| 3 | C6.01 | 1999/02/20 | 15:11 | 15:19 | 15:28 | |
| 4 | C5.46 | 1999/02/19 | 16:15 | 16:23 | 16:28 | |
| 5 | C4.97 | 1999/02/14 | 23:36 | 23:40 | 23:43 | |
| 6 | C2.67 | 1999/02/16 | 19:12 | 19:16 | 19:22 | |
| 7 | C2.5 | 1999/02/10 | 05:57 | 06:58 | 07:26 | |
| 8 | C2.37 | 1999/02/18 | 18:48 | 18:53 | 18:58 | |
| 9 | C1.73 | 1999/02/17 | 12:34 | 12:38 | 12:40 | |
| 10 | C1.59 | 1999/02/14 | 02:04 | 02:07 | 02:08 |
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|---|---|
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| Monthly mean Sunspot Number | |
|---|---|
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