Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 19, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2816 | S25 | E34 | 05 | 0050 | Beta | Apr 23, 2021 | Apr 30, 2021 | May 14, 2021 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1992 to April 2021. The gray background is the average SSN index.
