Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 16, 2005. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 836 | S08 | W64 | 05 | 0110 | Beta | Dec 12, 2005 | Dec 19, 2005 | Jan 1, 2006 |
| № 835 | N18 | E03 | 07 | 0160 | Beta | Dec 17, 2005 | Dec 24, 2005 | Jan 7, 2006 |
| № 834 | S07 | W02 | 05 | 0090 | Beta | Dec 17, 2005 | Dec 23, 2005 | Jan 6, 2006 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1976 to December 2005. The gray background is the average SSN index.
