Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 21, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2595 | N11 | W70 | 07 | 0120 | Beta | Sep 17, 2016 | Sep 23, 2016 | Oct 7, 2016 |
| № 2593 | N09 | W17 | 05 | 0050 | Beta | Sep 21, 2016 | Sep 27, 2016 | Oct 11, 2016 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1987 to September 2016. The gray background is the average SSN index.
