Sunspots and active regions — April 21, 2019
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) | |
|---|---|---|---|---|---|---|---|---|
| № 2739 | N06 | W65 | 01 | 0010 | Alpha | Apr 17, 2019 | Apr 24, 2019 | May 7, 2019 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1990, January to 2019, April. Gray background - average solar cycle.
