Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 4, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 4211 | S14 | E57 | 01 | 0210 | Alpha | Sep 9, 2025 | Sep 16, 2025 | Sep 30, 2025 |
| № 4210 | N08 | E42 | 05 | 0140 | Beta | Sep 8, 2025 | Sep 15, 2025 | Sep 28, 2025 |
| № 4207 | N30 | E25 | 06 | 0300 | Beta | Sep 7, 2025 | Sep 14, 2025 | Sep 28, 2025 |
| № 4206 | N08 | E02 | 01 | 0080 | Alpha | Sep 5, 2025 | Sep 12, 2025 | Sep 25, 2025 |
| № 4205 | N18 | W02 | 02 | 0040 | Alpha | Sep 5, 2025 | Sep 12, 2025 | Sep 25, 2025 |
| № 4202 | S14 | W45 | 02 | 0080 | Alpha | Sep 2, 2025 | Sep 8, 2025 | Sep 22, 2025 |
| № 4201 | S21 | W50 | 01 | 0050 | Alpha | Sep 1, 2025 | Sep 8, 2025 | Sep 22, 2025 |
| № 4199 | N04 | W50 | 06 | 0170 | Beta | Sep 1, 2025 | Sep 8, 2025 | Sep 21, 2025 |
| № 4197 | S18 | W64 | 14 | 0480 | Beta | Aug 31, 2025 | Sep 7, 2025 | Sep 21, 2025 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1996 to September 2025. The gray background is the average SSN index.
