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) | |
|---|---|---|---|---|---|---|---|---|
| № 2869 | S34 | W12 | 09 | 0060 | Beta | Sep 11, 2021 | Sep 18, 2021 | Oct 2, 2021 |
| № 2868 | S22 | W32 | 20 | 0250 | Beta | Sep 9, 2021 | Sep 16, 2021 | Sep 30, 2021 |
| № 2866 | S18 | W17 | 17 | 0460 | Beta | Sep 11, 2021 | Sep 17, 2021 | Oct 1, 2021 |
| № 2864 | N24 | W74 | 02 | 0080 | Beta | Sep 6, 2021 | Sep 13, 2021 | Sep 27, 2021 |
| № 2863 | S15 | W79 | 01 | 0070 | Alpha | Sep 6, 2021 | Sep 13, 2021 | Sep 26, 2021 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1992, January to 2021, September. Gray background - average solar cycle.
