No image for the selected date
Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 16, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1724 | S27 | E46 | 02 | 0060 | Alpha | Apr 20, 2013 | Apr 27, 2013 | May 11, 2013 |
| № 1723 | S18 | E22 | 12 | 0180 | Beta-Gamma | Apr 19, 2013 | Apr 25, 2013 | May 9, 2013 |
| № 1722 | S21 | W22 | 05 | 0030 | Beta | Apr 15, 2013 | Apr 22, 2013 | May 6, 2013 |
| № 1721 | S18 | W31 | 12 | 0140 | Beta | Apr 14, 2013 | Apr 21, 2013 | May 5, 2013 |
| № 1719 | N09 | W51 | 04 | 0070 | Beta | Apr 13, 2013 | Apr 20, 2013 | May 3, 2013 |
| № 1718 | N20 | W82 | 04 | 0110 | Beta | Apr 11, 2013 | Apr 17, 2013 | May 1, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to April 2013. The gray background is the average SSN index.
