2021 December 16 Sun (circa 22:00 UTC) - with AR12904, AR12905, AR12906, AR12907, AR12908, AR12909 and possible AR12910 and AR12911
.
AR12905 is located at (S11E09). 2 sunspots are visible.
AR12906, is located at (N29W03), at least 10 sunspots are visible. The leading sunspot comes with full penumbra.
AR12907 is located at (S21E27), and at least 18 sunspots are visible, both leading and following sunspots have split umbrae.
AR12908 is located at (S21E46). At least 15 sunspots are visible. Both leading and following sunspots have mature penumbrae
AR12909 is located at (S21E58). At least 7 sunspots are visible. Both leading and following sunspots have mature penumbrae.
Meanwhile, a new AR appears at (N14W12). Flares are observed. At least 5 sunspots are visible. This may become AR12910.
Another AR appear on the NE solar limb, at (N19E70). At least 7 sunspots are visible, embedded in bright faculae.
Sunspot count: group=7, sunspot=64, R=134
H-alpha image from Learmonth, taken at 22:52 UTC
White-light image from SDO, taken at 21:52 UTC
2021 December 16 Sun (circa 22:00 UTC) - with AR12904, AR12905, AR12906, AR12907, AR12908, AR12909 and possible AR12910
2021 December 16 Sun (circa 22:00 UTC) - with AR12904, AR12905, AR12906, AR12907, AR12908, AR12909 and possible AR12910
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