Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 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) | |
|---|---|---|---|---|---|---|---|---|
| № 4311 | N03 | E18 | 03 | 0020 | Beta | Dec 19, 2025 | Dec 26, 2025 | Jan 8, 2026 |
| № 4310 | N01 | W36 | 06 | 0010 | Beta | Dec 15, 2025 | Dec 22, 2025 | Jan 4, 2026 |
| № 4309 | S09 | W60 | 01 | 0010 | Alpha | Dec 13, 2025 | Dec 20, 2025 | Jan 3, 2026 |
| № 4308 | N07 | E06 | 04 | 0020 | Beta | Dec 18, 2025 | Dec 25, 2025 | Jan 8, 2026 |
| № 4307 | S15 | W58 | 06 | 0110 | Beta | Dec 13, 2025 | Dec 20, 2025 | Jan 3, 2026 |
| № 4305 | S25 | W60 | 01 | 0050 | Alpha | Dec 13, 2025 | Dec 20, 2025 | Jan 3, 2026 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1996 to December 2025. The gray background is the average SSN index.
