Sunspot region AR8747

Number of
sunspots
Size Class Magn. Class Spot Location
1999/10/29 4 40 CRO N10E59
1999/10/30 8 190 DAO N11E44
1999/10/31 13 210 EAO N12E30
1999/11/01 12 160 DAO N11E17
1999/11/02 11 120 DAO N12E03
1999/11/03 13 100 DAO N12W11
1999/11/04 11 90 ESO N12W25
1999/11/05 7 90 DSO N11W39
1999/11/06 5 120 DSO N11W52
1999/11/07 6 70 CSO N10W64
1999/11/08 3 30 CAO N12W78
1999/11/09 1 30 HAX N12W90
C
6

The top 6 solar flares from sunspot region 8747

Start Maximum End
1C4.871999/10/3117:1617:1817:20
2C2.541999/11/0100:1200:3000:43
3C2.411999/10/3118:2418:3118:37
4C2.391999/10/2920:0420:1220:18
5C2.311999/10/2814:3914:4614:51
6C1.561999/11/0113:0713:1613:28

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Last X-flare2025/06/19X1.9
Last M-flare2025/10/03M1.2
Last geomagnetic storm2025/10/03Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
September 2025129.8 -3.7
October 2025140.1 +10.3
Last 30 days131.3 -1.2

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*since 1994

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