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) | |
|---|---|---|---|---|---|---|---|---|
| № 2860 | S29 | W35 | 20 | 0240 | Beta-Gamma | Aug 29, 2021 | Sep 5, 2021 | Sep 19, 2021 |
| № 2859 | N18 | W46 | 01 | 0000 | Alpha | Aug 28, 2021 | Sep 4, 2021 | Sep 18, 2021 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1992, January to 2021, September. Gray background - average solar cycle.
