Viewing archive of Wednesday, 21 December 2016 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot numberNew regionsBackground fluxMaximum flux
15 -100 -1A6.7B2.76

Sunspot regions

Region 12620

Number of
sunspots
Size Class Magn. Class Spot Location
4 10 BXO S23W37

Solar flares on this day

B2.7

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/09/28Kp5 (G1)
Number of spotless days in 2019:216
Current stretch spotless days:18

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*since 1994

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