Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 17, 2021. Coordinates are given as of the end of the day.
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 2911 | N19 | E70 | 03 | 0020 | Beta | Dec 23, 2021 | Dec 30, 2021 | Jan 13, 2022 |
| № 2910 | N13 | W16 | 06 | 0020 | Beta | Dec 17, 2021 | Dec 24, 2021 | Jan 6, 2022 |
| № 2909 | S21 | E58 | 05 | 0150 | Beta | Dec 22, 2021 | Dec 29, 2021 | Jan 12, 2022 |
| № 2908 | S20 | E43 | 10 | 0210 | Beta | Dec 21, 2021 | Dec 28, 2021 | Jan 11, 2022 |
| № 2907 | S20 | E26 | 23 | 0180 | Beta-Gamma | Dec 20, 2021 | Dec 27, 2021 | Jan 10, 2022 |
| № 2906 | S29 | W04 | 09 | 0060 | Beta | Dec 18, 2021 | Dec 25, 2021 | Jan 8, 2022 |
| № 2905 | S12 | W11 | 01 | 0010 | Alpha | Dec 17, 2021 | Dec 24, 2021 | Jan 7, 2022 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1992 to December 2021. The gray background is the average SSN index.
