Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 23, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1832 | N25 | W53 | 02 | 0030 | Beta | Aug 20, 2013 | Aug 27, 2013 | Sep 10, 2013 |
| № 1831 | N13 | W53 | 05 | 0030 | Beta | Aug 20, 2013 | Aug 27, 2013 | Sep 10, 2013 |
| № 1830 | S06 | W55 | 05 | 0050 | Beta | Aug 20, 2013 | Aug 27, 2013 | Sep 9, 2013 |
| № 1829 | N05 | W78 | 03 | 0030 | Beta | Aug 18, 2013 | Aug 25, 2013 | Sep 8, 2013 |
| № 1828 | N14 | E22 | 01 | 0020 | Beta | Aug 26, 2013 | Sep 2, 2013 | Sep 15, 2013 |
| № 1827 | S18 | E14 | 08 | 0060 | Beta | Aug 25, 2013 | Sep 1, 2013 | Sep 15, 2013 |
| № 1825 | N14 | W73 | 02 | 0050 | Alpha | Aug 19, 2013 | Aug 26, 2013 | Sep 8, 2013 |
| № 1823 | S07 | W27 | 01 | 0100 | Alpha | Aug 22, 2013 | Aug 29, 2013 | Sep 12, 2013 |
| № 1820 | S12 | W65 | 08 | 0110 | Beta | Aug 19, 2013 | Aug 26, 2013 | Sep 9, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to August 2013. The gray background is the average SSN index.
