Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 17, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1546 | N16 | E71 | 01 | 0050 | Alpha | Aug 23, 2012 | Aug 30, 2012 | Sep 13, 2012 |
| № 1543 | N22 | W46 | 02 | 0360 | Alpha | Aug 14, 2012 | Aug 21, 2012 | Sep 4, 2012 |
| № 1542 | S11 | W60 | 01 | 0000 | Alpha | Aug 13, 2012 | Aug 20, 2012 | Sep 3, 2012 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1983 to August 2012. The gray background is the average SSN index.
