No image for the selected date
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 | W73 | 03 | 0010 | Beta | Dec 12, 2013 | Dec 19, 2013 | Jan 2, 2014 |
| № 1925 | S09 | E16 | 04 | 0010 | Beta | Dec 19, 2013 | Dec 26, 2013 | Jan 9, 2014 |
| № 1923 | N01 | W49 | 06 | 0010 | Beta | Dec 14, 2013 | Dec 21, 2013 | Jan 4, 2014 |
| № 1921 | N06 | W15 | 07 | 0300 | Beta | Dec 17, 2013 | Dec 24, 2013 | Jan 6, 2014 |
| № 1920 | N12 | W21 | 02 | 0040 | Alpha | Dec 16, 2013 | Dec 23, 2013 | Jan 6, 2014 |
| № 1918 | S10 | W29 | 06 | 0090 | Beta | Dec 16, 2013 | Dec 23, 2013 | Jan 5, 2014 |
| № 1917 | S15 | W51 | 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.
