Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 16, 2011. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1271 | N17 | E75 | 03 | 0120 | Beta | Aug 23, 2011 | Aug 29, 2011 | Sep 12, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to August 2011. The gray background is the average SSN index.
