No image for the selected date
Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 21, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1549 | S18 | W42 | 02 | 0010 | Beta | Aug 19, 2012 | Aug 26, 2012 | Sep 8, 2012 |
| № 1548 | N20 | E49 | 03 | 0030 | Beta | Aug 26, 2012 | Sep 1, 2012 | Sep 15, 2012 |
| № 1547 | N05 | W15 | 05 | 0010 | Beta | Aug 21, 2012 | Aug 27, 2012 | Sep 10, 2012 |
| № 1546 | N17 | E18 | 02 | 0040 | Alpha | Aug 23, 2012 | Aug 30, 2012 | Sep 13, 2012 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1983 to August 2012. The gray background is the average SSN index.
