Active areas
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) | |
|---|---|---|---|---|---|---|---|---|
| № 2864 | S23 | E24 | 04 | 0030 | Beta | Sep 7, 2021 | Sep 14, 2021 | Sep 27, 2021 |
| № 2863 | S16 | E17 | 09 | 0160 | Beta | Sep 6, 2021 | Sep 13, 2021 | Sep 27, 2021 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1992, January to 2021, September. Gray background - average solar cycle.
