Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 20, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 837 | S10 | W06 | 22 | 0200 | Beta | Dec 21, 2005 | Dec 27, 2005 | Jan 10, 2006 |
| № 835 | N19 | W54 | 06 | 0120 | Beta | Dec 17, 2005 | Dec 24, 2005 | Jan 6, 2006 |
| № 834 | S07 | W57 | 05 | 0070 | 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.
