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) | |
|---|---|---|---|---|---|---|---|---|
| № 2872 | N18 | W22 | 09 | 0060 | Beta | Sep 25, 2021 | Oct 2, 2021 | Oct 16, 2021 |
| № 2871 | S28 | W11 | 09 | 0140 | Beta | 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.
