Sunspot region AR12400

Number of
sunspots
Size Class Magn. Class Spot Location
2015/08/12 4 10 BXO N17E36
2015/08/13 2 10 BXO N17E22
2015/08/14 7 50 DAO N17E07
2015/08/15 5 50 CAO N17W05
2015/08/16 5 30 CAO N18W18
2015/08/17 2 10 AXX N17W33
B
2

The top 2 solar flares from sunspot region 12400

Start Maximum End
1B8.042015/08/1310:3010:4511:00
2B6.572015/08/1116:5617:0017:09

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Space weather facts

Last X-flare2025/01/04X1.85
Last M-flare2025/01/22M1.3
Last geomagnetic storm2025/01/04Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
December 2024154.5 +2
January 2025145.8 -8.7
Last 30 days161.9 +43

This day in history*

Solar flares
12012X1.26
22024M5.12
32024M4.3
42003M3.59
52024M2.44
DstG
11957-114G1
22000-96G2
31979-84G1
42004-78G2
52012-71G1
*since 1994

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