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) | |
|---|---|---|---|---|---|---|---|---|
| № 2904 | S26 | E54 | 01 | 0010 | alpha | Dec 9, 2021 | Dec 16, 2021 | Dec 30, 2021 |
| № 2902 | N15 | W62 | 02 | 0020 | alpha | Nov 30, 2021 | Dec 7, 2021 | Dec 21, 2021 |
| № 2901 | N21 | W19 | 02 | 0010 | beta | Dec 4, 2021 | Dec 10, 2021 | Dec 24, 2021 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1992, January to 2021, December. Gray background - average solar cycle.
