Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on January 18, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1659 | N04 | E53 | 03 | 0010 | Beta | Jan 23, 2013 | Jan 30, 2013 | Feb 12, 2013 |
| № 1658 | S13 | E08 | 02 | 0070 | Alpha | Jan 20, 2013 | Jan 26, 2013 | Feb 9, 2013 |
| № 1654 | N07 | W47 | 27 | 0540 | Beta-Gamma | Jan 15, 2013 | Jan 22, 2013 | Feb 5, 2013 |
| № 1652 | N18 | W82 | 02 | 0030 | Alpha | Jan 13, 2013 | Jan 20, 2013 | Feb 2, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to January 2013. The gray background is the average SSN index.
