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) | |
|---|---|---|---|---|---|---|---|---|
| № 2878 | S23 | E35 | 06 | 0030 | Beta | Oct 1, 2021 | Oct 8, 2021 | Oct 21, 2021 |
| № 2877 | S17 | E01 | 04 | 0010 | Beta | Sep 28, 2021 | Oct 5, 2021 | Oct 19, 2021 |
| № 2872 | N17 | W37 | 07 | 0040 | Beta | Sep 25, 2021 | Oct 2, 2021 | Oct 16, 2021 |
| № 2871 | S28 | W26 | 10 | 0090 | Beta-Gamma | 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.
