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) | |
|---|---|---|---|---|---|---|---|---|
| № 2875 | S32 | W45 | 03 | 0010 | Beta | Sep 21, 2021 | Sep 28, 2021 | Oct 13, 2021 |
| № 2873 | N26 | W46 | 06 | 0010 | Beta | Sep 21, 2021 | Sep 28, 2021 | Oct 12, 2021 |
| № 2872 | N17 | E04 | 15 | 0120 | Beta | Sep 25, 2021 | Oct 2, 2021 | Oct 16, 2021 |
| № 2871 | S28 | E13 | 11 | 0210 | Beta-Gamma-Delta | Sep 26, 2021 | Oct 3, 2021 | Oct 17, 2021 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1992, January to 2021, September. Gray background - average solar cycle.
