Sunspot region AR8578
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/06/09 | 5 | 20 | CRO | N19E04 | |
| 1999/06/10 | 10 | 70 | DAO | N19W09 | |
| 1999/06/11 | 14 | 150 | DAO | N19W23 | |
| 1999/06/12 | 8 | 130 | DSO | N19W37 | |
| 1999/06/13 | 8 | 110 | DSO | N20W49 | |
| 1999/06/14 | 7 | 140 | CAO | N20W62 | |
| 1999/06/15 | 5 | 120 | CAO | N21W73 | |
| 1999/06/16 | 1 | 90 | HAX | N20W85 | |
| 1999/06/17 | 1 | 40 | HAX | N22W99 |
| C |
|---|
| 1 |
The top 1 solar flares from sunspot region 8578
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C1.8 | 1999/06/09 | 00:07 | 00:17 | 00:31 |
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| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
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| Monthly mean Sunspot Number | |
|---|---|
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| Last 30 days | 108 +10.6 |