Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 17, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 4256 | S16 | E68 | 05 | 0040 | Beta | Oct 23, 2025 | Oct 30, 2025 | Nov 13, 2025 |
| № 4255 | S08 | E40 | 02 | 0010 | Beta | Oct 21, 2025 | Oct 28, 2025 | Nov 10, 2025 |
| № 4254 | N10 | E48 | 01 | 0060 | Alpha | Oct 21, 2025 | Oct 28, 2025 | Nov 11, 2025 |
| № 4252 | S13 | E16 | 05 | 0150 | Beta | Oct 19, 2025 | Oct 26, 2025 | Nov 8, 2025 |
| № 4250 | N05 | W32 | 01 | 0010 | Alpha | Oct 15, 2025 | Oct 22, 2025 | Nov 5, 2025 |
| № 4248 | N07 | W39 | 18 | 0360 | Beta-Gamma | Oct 15, 2025 | Oct 22, 2025 | Nov 4, 2025 |
| № 4246 | N24 | W67 | 30 | 0840 | Beta-Gamma-Delta | Oct 13, 2025 | Oct 20, 2025 | Nov 3, 2025 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1996 to October 2025. The gray background is the average SSN index.
