Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 2, 2025. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 4208 | N18 | W78 | 02 | 0030 | Beta | Aug 28, 2025 | Sep 4, 2025 | Sep 17, 2025 |
| № 4207 | N30 | E54 | 06 | 0210 | Beta | Sep 7, 2025 | Sep 14, 2025 | Sep 28, 2025 |
| № 4206 | N09 | E32 | 01 | 0100 | Alpha | Sep 5, 2025 | Sep 12, 2025 | Sep 26, 2025 |
| № 4205 | N18 | E28 | 01 | 0060 | Alpha | Sep 5, 2025 | Sep 12, 2025 | Sep 26, 2025 |
| № 4202 | S14 | W17 | 03 | 0120 | Alpha | Sep 2, 2025 | Sep 8, 2025 | Sep 22, 2025 |
| № 4201 | S22 | W21 | 03 | 0060 | Alpha | Sep 1, 2025 | Sep 8, 2025 | Sep 22, 2025 |
| № 4200 | S09 | W79 | 04 | 0060 | Beta | Aug 28, 2025 | Sep 4, 2025 | Sep 17, 2025 |
| № 4199 | N04 | W20 | 07 | 0210 | Beta | Sep 1, 2025 | Sep 8, 2025 | Sep 22, 2025 |
| № 4197 | S18 | W36 | 33 | 0550 | Beta-Gamma | Aug 31, 2025 | Sep 7, 2025 | Sep 21, 2025 |
| № 4191 | N11 | W80 | 05 | 0300 | Beta | Aug 28, 2025 | Sep 4, 2025 | Sep 17, 2025 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1996 to September 2025. The gray background is the average SSN index.
