Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 4, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 709 | N06 | E58 | 01 | 0020 | Alpha | Dec 10, 2004 | Dec 16, 2004 | Dec 30, 2004 |
| № 708 | N08 | W15 | 05 | 0160 | Beta | Dec 4, 2004 | Dec 11, 2004 | Dec 24, 2004 |
| № 707 | S14 | W52 | 09 | 0190 | Beta | Dec 1, 2004 | Dec 8, 2004 | Dec 22, 2004 |
| № 706 | S06 | W51 | 03 | 0080 | Beta | Dec 1, 2004 | Dec 8, 2004 | Dec 22, 2004 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1975 to December 2004. The gray background is the average SSN index.
