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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 28, 2026. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 4542 | S19 | W35 | 01 | 0010 | Alpha | Sep 26, 2026 | Oct 3, 2026 | Oct 17, 2026 |
| № 4536 | N02 | W94 | 03 | 0100 | Beta | Sep 22, 2026 | Sep 29, 2026 | Oct 12, 2026 |
| № 4535 | N11 | W32 | 12 | 0040 | Beta-Gamma | Sep 27, 2026 | Oct 3, 2026 | Oct 17, 2026 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1997 to September 2026. The gray background is the average SSN index.
