Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 15, 2012. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1571 | S12 | E33 | 02 | 0100 | Beta | Sep 18, 2012 | Sep 25, 2012 | Oct 9, 2012 |
| № 1569 | S12 | E14 | 10 | 0140 | Beta-Gamma | Sep 17, 2012 | Sep 24, 2012 | Oct 7, 2012 |
| № 1566 | N22 | W65 | 02 | 0030 | Alpha | Sep 11, 2012 | Sep 18, 2012 | Oct 2, 2012 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1983 to September 2012. The gray background is the average SSN index.
