Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on July 17, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1794 | N15 | W86 | 03 | 0110 | Beta | Jul 11, 2013 | Jul 18, 2013 | Aug 1, 2013 |
| № 1793 | N21 | E53 | 14 | 0310 | Beta-Gamma | Jul 22, 2013 | Jul 29, 2013 | Aug 12, 2013 |
| № 1791 | S14 | W06 | 14 | 0110 | Beta-Delta | Jul 17, 2013 | Jul 24, 2013 | Aug 7, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to July 2013. The gray background is the average SSN index.
