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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on July 28, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1806 | S16 | E59 | 02 | 0010 | Alpha | Aug 2, 2013 | Aug 9, 2013 | Aug 23, 2013 |
| № 1805 | S06 | W28 | 04 | 0030 | Beta | Jul 27, 2013 | Aug 3, 2013 | Aug 16, 2013 |
| № 1801 | N20 | E18 | 01 | 0090 | Alpha | Jul 30, 2013 | Aug 6, 2013 | Aug 20, 2013 |
| № 1800 | S08 | W58 | 17 | 0210 | Beta-Gamma | Jul 24, 2013 | Jul 31, 2013 | Aug 14, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to July 2013. The gray background is the average SSN index.
