Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 13, 2013. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1819 | S20 | E23 | 02 | 0010 | Alpha | Aug 16, 2013 | Aug 22, 2013 | Sep 5, 2013 |
| № 1818 | S07 | E36 | 08 | 0120 | Beta-Gamma | Aug 17, 2013 | Aug 23, 2013 | Sep 6, 2013 |
| № 1817 | S23 | E09 | 23 | 0180 | Beta-Gamma-Delta | Aug 15, 2013 | Aug 21, 2013 | Sep 4, 2013 |
| № 1814 | S27 | W02 | 01 | 0010 | Alpha | Aug 14, 2013 | Aug 21, 2013 | Sep 4, 2013 |
| № 1809 | N14 | W93 | 01 | 0010 | Alpha | Aug 7, 2013 | Aug 14, 2013 | Aug 27, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to August 2013. The gray background is the average SSN index.
