Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 11, 2021. Coordinates are given as of the end of the day.
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 2869 | S34 | W14 | 09 | 0060 | Beta | Sep 11, 2021 | Sep 18, 2021 | Oct 2, 2021 |
| № 2868 | S22 | W34 | 20 | 0250 | Beta | Sep 9, 2021 | Sep 16, 2021 | Sep 30, 2021 |
| № 2866 | S18 | W19 | 17 | 0460 | Beta | Sep 11, 2021 | Sep 17, 2021 | Oct 1, 2021 |
| № 2864 | N24 | W76 | 02 | 0080 | Beta | Sep 6, 2021 | Sep 13, 2021 | Sep 27, 2021 |
| № 2863 | S15 | W81 | 01 | 0070 | Alpha | Sep 6, 2021 | Sep 13, 2021 | Sep 26, 2021 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1992 to September 2021. The gray background is the average SSN index.
