Sunspot region AR9900

Number of
sunspots
Size Class Magn. Class Spot Location
2002/04/08 14 80 DSO S29E07
2002/04/09 20 150 EAI S29W06
2002/04/10 20 180 EAI S29W19
2002/04/11 18 110 ESI S28W32
2002/04/12 13 100 DAO S28W45
2002/04/13 14 140 DAO S28W57
2002/04/14 10 100 CSO S29W68
2002/04/15 3 40 BXO S28W81
C
3

The top 3 solar flares from sunspot region 9900

Start Maximum End
1C6.322002/04/1105:5906:1006:20
2C5.152002/04/1310:2610:3010:32
3C4.712002/04/1022:2522:4222:55

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Last X-flare2024/11/06X2.39
Last M-flare2024/11/23M1.1
Last geomagnetic storm2024/11/10Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
October 2024166.4 +25
November 2024144.7 -21.7
Last 30 days158.6 +10.8

This day in history*

Solar flares
12000X3.4
22000X2.87
32000X2.71
41998X1.54
51999M4.33
DstG
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*since 1994

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