Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on January 9, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 539 | N09 | E15 | 02 | 0010 | Beta | Jan 11, 2004 | Jan 18, 2004 | Jan 31, 2004 |
| № 538 | N05 | W04 | 02 | 0010 | Beta | Jan 10, 2004 | Jan 16, 2004 | Jan 30, 2004 |
| № 537 | N04 | E50 | 19 | 0210 | Beta-Gamma-Delta | Jan 14, 2004 | Jan 21, 2004 | Feb 3, 2004 |
| № 536 | S11 | W16 | 55 | 0780 | Beta-Gamma-Delta | Jan 9, 2004 | Jan 16, 2004 | Jan 29, 2004 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1975 to January 2004. The gray background is the average SSN index.
