Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 11, 2015. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2431 | S17 | E75 | 01 | 0030 | Alpha | Oct 18, 2015 | Oct 25, 2015 | Nov 7, 2015 |
| № 2430 | S17 | E33 | 01 | 0020 | Alpha | Oct 15, 2015 | Oct 21, 2015 | Nov 4, 2015 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1986 to October 2015. The gray background is the average SSN index.
