Sunspots and active regions — September 20, 2025
Sunspots and active regions
By the end of the day, the following active regions with sunspots could be observed on the Sun's surface
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 4225 | N09 | E43 | 03 | 0180 | Beta | Sep 24, 2025 | Oct 1, 2025 | Oct 14, 2025 |
| № 4224 | S13 | E17 | 06 | 0020 | Beta | Sep 22, 2025 | Sep 29, 2025 | Oct 13, 2025 |
| № 4223 | S16 | E23 | 08 | 0040 | Beta | Sep 23, 2025 | Sep 29, 2025 | Oct 13, 2025 |
| № 4222 | N13 | W19 | 02 | 0010 | Alpha | Sep 19, 2025 | Sep 26, 2025 | Oct 10, 2025 |
| № 4221 | N04 | E05 | 08 | 0070 | Beta | Sep 21, 2025 | Sep 28, 2025 | Oct 12, 2025 |
| № 4220 | S18 | W26 | 21 | 0240 | Beta-Gamma | Sep 19, 2025 | Sep 26, 2025 | Oct 9, 2025 |
| № 4219 | N24 | W67 | 01 | 0010 | Beta | Sep 16, 2025 | Sep 23, 2025 | Oct 7, 2025 |
| № 4217 | S17 | E09 | 08 | 0220 | Beta | Sep 22, 2025 | Sep 28, 2025 | Oct 12, 2025 |
| № 4216 | N10 | W29 | 11 | 0080 | Beta-Gamma | Sep 19, 2025 | Sep 25, 2025 | Oct 9, 2025 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1996, January to 2025, September. Gray background - average solar cycle.
