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) | |
|---|---|---|---|---|---|---|---|---|
| № 1027 | N23 | E23 | 09 | 0100 | Beta | Sep 27, 2009 | Oct 4, 2009 | Oct 17, 2009 |
| № 1026 | S36 | E36 | 02 | 0040 | Alpha | Sep 28, 2009 | Oct 5, 2009 | Oct 20, 2009 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1980, January to 2009, September. Gray background - average solar cycle.
