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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 20, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1932 | N04 | E19 | 02 | 0010 | Alpha | Dec 22, 2013 | Dec 29, 2013 | Jan 12, 2014 |
| № 1931 | S15 | E64 | 01 | 0210 | Alpha | Dec 26, 2013 | Jan 2, 2014 | Jan 15, 2014 |
| № 1930 | S11 | E24 | 10 | 0090 | Beta | Dec 23, 2013 | Dec 29, 2013 | Jan 12, 2014 |
| № 1929 | S11 | E42 | 02 | 0010 | Beta | Dec 24, 2013 | Dec 31, 2013 | Jan 13, 2014 |
| № 1928 | S16 | W17 | 24 | 0360 | Beta-Gamma | Dec 20, 2013 | Dec 26, 2013 | Jan 9, 2014 |
| № 1921 | N06 | W55 | 02 | 0220 | Alpha | Dec 17, 2013 | Dec 23, 2013 | Jan 6, 2014 |
| № 1920 | N13 | W60 | 02 | 0060 | Beta | Dec 16, 2013 | Dec 23, 2013 | Jan 6, 2014 |
| № 1918 | S10 | W68 | 03 | 0010 | Alpha | Dec 16, 2013 | Dec 23, 2013 | Jan 5, 2014 |
| № 1917 | S17 | W89 | 02 | 0180 | Beta | 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.
