2020 January 28 Sun - AR12757 and possible AR12758
AR12757 remains very active, with flares and filaments. The leading sunspot has splitted.
Meanwhile, the active region near the SE limb has developed and becomes very active with bright flares and filaments. A small sunspot is visible. Thus this group may become AR12758.
Sunspot count: group=2, sunspot number=4, R=24
H-alpha image from Learmonth taken at 01:30 UTC
Magnetogram and white-light images from SDO taken at 00:40:38 UTC
2020 January 28 Sun - AR12757 and possible AR12758
2020 January 28 Sun - AR12757 and possible AR12758
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