Active areas
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) | |
|---|---|---|---|---|---|---|---|---|
| № 1025 | N17 | E33 | 02 | 0010 | Beta | Sep 4, 2009 | Sep 11, 2009 | Sep 25, 2009 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1980, January to 2009, September. Gray background - average solar cycle.
