Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 4, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2902 | N18 | W46 | 05 | 0060 | Beta | Dec 1, 2021 | Dec 8, 2021 | Dec 22, 2021 |
| № 2898 | S26 | W88 | 04 | 0080 | Beta | Nov 28, 2021 | Dec 5, 2021 | Dec 19, 2021 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1992 to December 2021. The gray background is the average SSN index.
