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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 11, 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 | E51 | 01 | 0010 | Alpha | Aug 16, 2013 | Aug 23, 2013 | Sep 5, 2013 |
| № 1818 | S07 | E60 | 01 | 0020 | Alpha | Aug 16, 2013 | Aug 23, 2013 | Sep 6, 2013 |
| № 1817 | S22 | E36 | 03 | 0010 | Beta | Aug 15, 2013 | Aug 22, 2013 | Sep 4, 2013 |
| № 1814 | S26 | E24 | 01 | 0020 | Alpha | Aug 14, 2013 | Aug 21, 2013 | Sep 4, 2013 |
| № 1813 | S14 | W45 | 08 | 0030 | Beta | Aug 8, 2013 | Aug 15, 2013 | Aug 29, 2013 |
| № 1809 | N10 | W65 | 02 | 0020 | 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.
