Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 28, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 4077 | S16 | E33 | 04 | 0020 | Alpha | May 1, 2025 | May 8, 2025 | May 22, 2025 |
| № 4076 | N05 | E31 | 01 | 0080 | Alpha | May 1, 2025 | May 8, 2025 | May 22, 2025 |
| № 4073 | N11 | E01 | 02 | 0010 | Beta | Apr 29, 2025 | May 6, 2025 | May 19, 2025 |
| № 4072 | S19 | E12 | 04 | 0050 | Alpha | Apr 30, 2025 | May 7, 2025 | May 20, 2025 |
| № 4070 | S12 | W27 | 11 | 0110 | Beta | Apr 27, 2025 | May 4, 2025 | May 17, 2025 |
| № 4069 | S09 | W58 | 01 | 0010 | Alpha | Apr 25, 2025 | May 1, 2025 | May 15, 2025 |
| № 4068 | S25 | W16 | 01 | 0010 | Alpha | Apr 28, 2025 | May 5, 2025 | May 19, 2025 |
| № 4065 | S31 | W64 | 01 | 0030 | Alpha | Apr 24, 2025 | May 1, 2025 | May 15, 2025 |
| № 4064 | N12 | W71 | 04 | 0100 | Beta | Apr 24, 2025 | Apr 30, 2025 | May 14, 2025 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1996 to April 2025. The gray background is the average SSN index.
