Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 4, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 4527 | N03 | E73 | 01 | 0060 | Alpha | Sep 10, 2026 | Sep 17, 2026 | Oct 1, 2026 |
| № 4526 | S02 | E71 | 02 | 0010 | Beta | Sep 10, 2026 | Sep 17, 2026 | Sep 30, 2026 |
| № 4525 | N11 | E68 | 03 | 0010 | Beta | Sep 10, 2026 | Sep 17, 2026 | Sep 30, 2026 |
| № 4524 | N12 | E55 | 03 | 0080 | Beta | Sep 9, 2026 | Sep 16, 2026 | Sep 29, 2026 |
| № 4523 | N10 | E25 | 02 | 0020 | Alpha | Sep 7, 2026 | Sep 14, 2026 | Sep 27, 2026 |
| № 4521 | N09 | E14 | 01 | 0080 | Alpha | Sep 6, 2026 | Sep 13, 2026 | Sep 26, 2026 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1997 to September 2026. The gray background is the average SSN index.
