Sunspot region AR12640

Number of
sunspots
Size Class Magn. Class Spot Location
2017/02/27 2 10 BXO N11E24
2017/02/28 4 20 BXO N09E11
2017/03/01 2 30 AXX N08W04
2017/03/02 2 10 AXX N09W18
2017/03/03 1 10 AXX N08W33
B
2

The top 2 solar flares from sunspot region 12640

Start Maximum End
1B4.012017/02/2623:1123:1823:25
2B1.62017/02/2704:5705:0005:04

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Last X-flare2024/12/08X2.2
Last M-flare2024/12/22M1.0
Last geomagnetic storm2024/12/17Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
November 2024152.5 -13.9
December 2024103.3 -49.2
Last 30 days115.4 -40.8

This day in history*

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*since 1994

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