Sunspots and active regions — April 19, 2021
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) | |
|---|---|---|---|---|---|---|---|---|
| № 2816 | S25 | E36 | 05 | 0050 | Beta | Apr 23, 2021 | Apr 30, 2021 | May 14, 2021 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1992, January to 2021, April. Gray background - average solar cycle.
