Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1668 | N12 | W14 | 07 | 0030 | Beta | Feb 4, 2013 | Feb 11, 2013 | Feb 24, 2013 |
| № 1667 | N22 | E44 | 14 | 0160 | Beta | Feb 8, 2013 | Feb 15, 2013 | Mar 1, 2013 |
| № 1665 | N10 | W02 | 05 | 0190 | Beta | Feb 5, 2013 | Feb 11, 2013 | Feb 25, 2013 |
| № 1663 | S09 | W63 | 01 | 0000 | Alpha | Jan 31, 2013 | Feb 7, 2013 | Feb 20, 2013 |
| № 1662 | N27 | W77 | 02 | 0020 | Alpha | Jan 30, 2013 | Feb 6, 2013 | Feb 20, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to February 2013. The gray background is the average SSN index.
