Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 4, 2020. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2790 | S22 | E36 | 06 | 0110 | Alpha | Dec 8, 2020 | Dec 15, 2020 | Dec 29, 2020 |
| № 2786 | S17 | W57 | 03 | 0410 | Alpha | Dec 1, 2020 | Dec 8, 2020 | Dec 21, 2020 |
| № 2785 | S23 | W75 | 01 | 0160 | Alpha | Nov 29, 2020 | Dec 6, 2020 | Dec 20, 2020 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1991 to December 2020. The gray background is the average SSN index.
