2021 October 17 Sun (circa 23:00 UTC) - with possible AR12886
This morning, a new active region appears on the SE limb, (S18E78). A large sunspot with mature penumbra is visible.
Sunspot count: group=1, sunspot=1, R=11
H-alpha image from Learmonth, taken at 23:52 UTC
White-light image from SDO, taken at 22:55 UTC
2021 October 17 Sun (circa 23:00 UTC) - with possible AR12886
2021 October 17 Sun (circa 23:00 UTC) - with possible AR12886
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