Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 17, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 4419 | N14 | E24 | 16 | 0360 | Beta-Gamma | Apr 20, 2026 | Apr 27, 2026 | May 11, 2026 |
| № 4416 | N20 | W69 | 03 | 0090 | Beta | Apr 13, 2026 | Apr 20, 2026 | May 4, 2026 |
| № 4415 | S18 | W37 | 01 | 0040 | Alpha | Apr 15, 2026 | Apr 22, 2026 | May 6, 2026 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1997 to April 2026. The gray background is the average SSN index.
