Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 19, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1575 | N07 | E77 | 02 | 0140 | Beta | Sep 26, 2012 | Oct 2, 2012 | Oct 16, 2012 |
| № 1574 | S23 | W41 | 01 | 0020 | Alpha | Sep 17, 2012 | Sep 24, 2012 | Oct 7, 2012 |
| № 1573 | N19 | E38 | 02 | 0010 | Beta | Sep 23, 2012 | Sep 30, 2012 | Oct 13, 2012 |
| № 1571 | S13 | W19 | 02 | 0060 | Alpha | Sep 18, 2012 | Sep 25, 2012 | Oct 9, 2012 |
| № 1569 | S12 | W38 | 04 | 0100 | Beta | Sep 17, 2012 | Sep 24, 2012 | Oct 7, 2012 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1983 to September 2012. The gray background is the average SSN index.
