Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 17, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1927 | S25 | W71 | 03 | 0010 | Beta | Dec 12, 2013 | Dec 19, 2013 | Jan 2, 2014 |
| № 1925 | S09 | E18 | 04 | 0010 | Beta | Dec 19, 2013 | Dec 26, 2013 | Jan 9, 2014 |
| № 1923 | N01 | W47 | 06 | 0010 | Beta | Dec 14, 2013 | Dec 21, 2013 | Jan 4, 2014 |
| № 1921 | N06 | W13 | 07 | 0300 | Beta | Dec 17, 2013 | Dec 24, 2013 | Jan 6, 2014 |
| № 1920 | N12 | W19 | 02 | 0040 | Alpha | Dec 16, 2013 | Dec 23, 2013 | Jan 6, 2014 |
| № 1918 | S10 | W27 | 06 | 0090 | Beta | Dec 16, 2013 | Dec 23, 2013 | Jan 5, 2014 |
| № 1917 | S15 | W49 | 16 | 0320 | Beta-Gamma | Dec 14, 2013 | Dec 21, 2013 | Jan 4, 2014 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to December 2013. The gray background is the average SSN index.
