Active areas
Sunspots and active regions
By the end of the day, the following active regions with sunspots could be observed on the Sun's surface
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 2902 | N18 | W33 | 13 | 0100 | Beta | Dec 1, 2021 | Dec 8, 2021 | Dec 22, 2021 |
| № 2900 | S27 | W90 | 01 | 0000 | Alpha | Nov 27, 2021 | Dec 4, 2021 | Dec 18, 2021 |
| № 2898 | S25 | W78 | 01 | 0100 | Alpha | Nov 28, 2021 | Dec 5, 2021 | Dec 19, 2021 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1992, January to 2021, December. Gray background - average solar cycle.
