Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on January 20, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2797 | S17 | E55 | 04 | 0120 | Beta | Jan 25, 2021 | Feb 1, 2021 | Feb 15, 2021 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1992 to January 2021. The gray background is the average SSN index.
