Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 17, 2010. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1100 | S24 | E61 | 01 | 0010 | Alpha | Aug 23, 2010 | Aug 30, 2010 | Sep 12, 2010 |
| № 1099 | N17 | W82 | 04 | 0060 | Beta | Aug 12, 2010 | Aug 18, 2010 | Sep 1, 2010 |
| № 1098 | N15 | W39 | 04 | 0030 | Beta | Aug 15, 2010 | Aug 22, 2010 | Sep 4, 2010 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1981 to August 2010. The gray background is the average SSN index.
