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) | |
|---|---|---|---|---|---|---|---|---|
| № 2884 | S20 | W40 | 01 | 0010 | Alpha | Oct 10, 2021 | Oct 17, 2021 | Oct 31, 2021 |
| № 2883 | N27 | W74 | 01 | 0010 | Alpha | Oct 7, 2021 | Oct 14, 2021 | Oct 28, 2021 |
| № 2882 | N16 | W28 | 03 | 0250 | Beta | Oct 11, 2021 | Oct 18, 2021 | Oct 31, 2021 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1992, January to 2021, October. Gray background - average solar cycle.
