Sunspot region AR11173

Number of
sunspots
Size Class Magn. Class Spot Location
2011/03/17 10 40 CAO S28E39
2011/03/18 11 60 CAO S29E26
2011/03/19 9 30 CRO S29E14
2011/03/20 6 20 BXO S30E01
2011/03/21 5 20 BXO S29W13
B
1

The top 1 solar flares from sunspot region 11173

Start Maximum End
1B4.712011/03/1811:4011:4511:50

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Last X-flare2025/03/28X1.1
Last M-flare2025/04/22M1.3
Last geomagnetic storm2025/04/21Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
March 2025134.2 -20.4
April 2025121 -13.2
Last 30 days113 -27.2

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*since 1994

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