Sunspot region AR8440
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/01/14 | 5 | 60 | CAO | N21E70 | |
| 1999/01/15 | 12 | 190 | DAO | N19E56 | |
| 1999/01/16 | 26 | 300 | DAI | N20E42 | |
| 1999/01/17 | 31 | 360 | EAI | N19E29 | |
| 1999/01/18 | 42 | 300 | EAI | N19E16 | |
| 1999/01/19 | 54 | 310 | FSI | N19E03 | |
| 1999/01/20 | 49 | 300 | EAI | N19W10 | |
| 1999/01/21 | 39 | 300 | FAI | N19W24 | |
| 1999/01/22 | 25 | 330 | FAI | N19W37 | |
| 1999/01/23 | 21 | 360 | FHI | N19W50 | |
| 1999/01/24 | 17 | 270 | FAI | N19W63 | |
| 1999/01/25 | 7 | 150 | FSO | N19W79 | |
| 1999/01/26 | 4 | 60 | DAO | N19W88 |
| C | M |
|---|---|
| 57 | 4 |
The top 10 solar flares from sunspot region 8440
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M5.27 | 1999/01/16 | 12:02 | 12:07 | 12:10 | |
| 2 | M2.96 | 1999/01/18 | 07:52 | 08:04 | 08:23 | |
| 3 | M1.91 | 1999/01/15 | 06:32 | 07:21 | 07:42 | |
| 4 | M1.42 | 1999/01/15 | 14:36 | 14:44 | 14:50 | |
| 5 | C9.31 | 1999/01/14 | 00:52 | 01:00 | 01:06 | |
| 6 | C7.93 | 1999/01/13 | 18:51 | 18:58 | 19:05 | |
| 7 | C7.37 | 1999/01/21 | 04:24 | 04:46 | 05:06 | |
| 8 | C7.21 | 1999/01/16 | 23:24 | 23:34 | 00:02 | |
| 9 | C7.01 | 1999/01/15 | 18:58 | 19:19 | 19:24 | |
| 10 | C6.9 | 1999/01/18 | 03:10 | 03:16 | 03:30 |
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| Spotless days | |
|---|---|
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| Monthly mean Sunspot Number | |
|---|---|
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| Last 30 days | 116.1 -41.8 |