Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 28, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2891 | N17 | E68 | 04 | 0250 | Beta | Nov 3, 2021 | Nov 10, 2021 | Nov 24, 2021 |
| № 2890 | S18 | W38 | 04 | 0030 | Beta | Oct 26, 2021 | Nov 2, 2021 | Nov 16, 2021 |
| № 2889 | S24 | E32 | 06 | 0040 | Beta | Oct 31, 2021 | Nov 7, 2021 | Nov 21, 2021 |
| № 2887 | S26 | E05 | 26 | 0250 | Beta-Gamma | Oct 29, 2021 | Nov 5, 2021 | Nov 19, 2021 |
| № 2886 | S19 | W54 | 01 | 0090 | Alpha | Oct 25, 2021 | Nov 1, 2021 | Nov 14, 2021 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1992 to October 2021. The gray background is the average SSN index.
