Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 28, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2920 | S16 | W41 | 08 | 0070 | Beta | Dec 26, 2021 | Jan 2, 2022 | Jan 15, 2022 |
| № 2919 | S11 | E42 | 01 | 0010 | Alpha | Jan 1, 2022 | Jan 8, 2022 | Jan 21, 2022 |
| № 2918 | N21 | W10 | 15 | 0180 | Beta | Dec 28, 2021 | Jan 4, 2022 | Jan 18, 2022 |
| № 2916 | S15 | E08 | 21 | 0480 | Beta | Dec 29, 2021 | Jan 5, 2022 | Jan 19, 2022 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1992 to December 2021. The gray background is the average SSN index.
