Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 4, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1739 | N13 | E75 | 13 | 0150 | Beta | May 11, 2013 | May 17, 2013 | May 31, 2013 |
| № 1738 | N16 | E63 | 01 | 0030 | Alpha | May 10, 2013 | May 17, 2013 | May 30, 2013 |
| № 1737 | N19 | E35 | 01 | 0010 | Alpha | May 8, 2013 | May 15, 2013 | May 28, 2013 |
| № 1734 | S19 | E10 | 15 | 0550 | Beta-Gamma | May 6, 2013 | May 13, 2013 | May 26, 2013 |
| № 1732 | S17 | W15 | 07 | 0160 | Beta | May 4, 2013 | May 11, 2013 | May 24, 2013 |
| № 1731 | N10 | W43 | 31 | 0150 | Beta-Gamma-Delta | May 2, 2013 | May 9, 2013 | May 22, 2013 |
| № 1730 | S16 | W81 | 01 | 0100 | Alpha | Apr 29, 2013 | May 6, 2013 | May 19, 2013 |
| № 1728 | N19 | W72 | 01 | 0010 | Alpha | Apr 30, 2013 | May 6, 2013 | May 20, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to May 2013. The gray background is the average SSN index.
