Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2801 | N30 | W59 | 01 | 0000 | Alpha | Jan 31, 2021 | Feb 7, 2021 | Feb 22, 2021 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1992 to February 2021. The gray background is the average SSN index.
