Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 15, 2016. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2591 | N04 | W38 | 03 | 0010 | Alpha | Sep 13, 2016 | Sep 20, 2016 | Oct 3, 2016 |
| № 2589 | N12 | W70 | 01 | 0020 | Alpha | Sep 11, 2016 | Sep 17, 2016 | Oct 1, 2016 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1987 to September 2016. The gray background is the average SSN index.
