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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 9, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1816 | S20 | E49 | 01 | 0010 | Alpha | Aug 14, 2013 | Aug 20, 2013 | Sep 3, 2013 |
| № 1815 | N07 | W59 | 03 | 0020 | Beta | Aug 5, 2013 | Aug 12, 2013 | Aug 26, 2013 |
| № 1814 | S26 | E52 | 01 | 0040 | Alpha | Aug 14, 2013 | Aug 21, 2013 | Sep 4, 2013 |
| № 1813 | S13 | W19 | 07 | 0040 | Beta-Gamma | Aug 8, 2013 | Aug 15, 2013 | Aug 29, 2013 |
| № 1810 | S25 | W31 | 04 | 0020 | Beta | Aug 7, 2013 | Aug 14, 2013 | Aug 28, 2013 |
| № 1809 | N11 | W38 | 03 | 0030 | Alpha | Aug 7, 2013 | Aug 14, 2013 | Aug 27, 2013 |
| № 1808 | N15 | W78 | 01 | 0030 | Alpha | Aug 4, 2013 | Aug 11, 2013 | Aug 24, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to August 2013. The gray background is the average SSN index.
