Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 31, 2004. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 716 | S16 | E52 | 02 | 0010 | Beta | Jan 5, 2005 | Jan 12, 2005 | Jan 25, 2005 |
| № 715 | N04 | E47 | 12 | 0350 | Beta-Gamma-Delta | Jan 5, 2005 | Jan 11, 2005 | Jan 25, 2005 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1975 to December 2004. The gray background is the average SSN index.
