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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 27, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1731 | N09 | E53 | 10 | 0300 | Beta-Gamma | May 2, 2013 | May 9, 2013 | May 22, 2013 |
| № 1730 | S18 | E22 | 07 | 0100 | Beta | Apr 30, 2013 | May 6, 2013 | May 20, 2013 |
| № 1729 | S15 | W47 | 03 | 0020 | Beta | Apr 24, 2013 | May 1, 2013 | May 15, 2013 |
| № 1728 | N19 | E26 | 02 | 0060 | Alpha | Apr 30, 2013 | May 7, 2013 | May 20, 2013 |
| № 1727 | N25 | W37 | 02 | 0010 | Alpha | Apr 25, 2013 | May 2, 2013 | May 16, 2013 |
| № 1726 | N13 | W91 | 20 | 0600 | Beta-Gamma | Apr 21, 2013 | Apr 28, 2013 | May 11, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to April 2013. The gray background is the average SSN index.
