Sunspot region AR12817

Number of
sunspots
Size Class Magn. Class Spot Location
2021/04/19 8 60 BXO N18W45
2021/04/20 13 140 DAI N18W60
2021/04/21 7 180 DAO N18W76
2021/04/22 5 140 CSO N18W92
2021/04/23 5 140 CSO N18W0*
BC
4812

The top 10 solar flares from sunspot region 12817

Start Maximum End
1C8.62021/04/2220:0020:1120:20
2C4.32021/04/2209:1409:2109:41
3C3.72021/04/2210:4010:4911:03
4C2.42021/04/2323:0823:1223:16
5C2.32021/04/2207:1607:2307:27
6C2.32021/04/2322:3922:5422:57
7C2.32021/04/2322:5723:0123:06
8C1.72021/04/2205:5005:5706:02
9C1.62021/04/2101:1801:2902:37
10C1.42021/04/2210:0310:0810:14

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Last X-flare2024/02/22X6.3
Last M-flare2024/02/28M1.5
Last geomagnetic storm2023/12/18Kp6 (G2)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
January 2024123 +8.8

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*since 1994

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