Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 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) | |
|---|---|---|---|---|---|---|---|---|
| № 554 | S08 | E62 | 06 | 0170 | Beta | Feb 15, 2004 | Feb 21, 2004 | Mar 6, 2004 |
| № 551 | S06 | W14 | 23 | 0370 | Beta-Gamma | Feb 9, 2004 | Feb 16, 2004 | Feb 29, 2004 |
| № 549 | N13 | W36 | 15 | 0080 | Beta | Feb 7, 2004 | Feb 14, 2004 | Feb 28, 2004 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1975 to February 2004. The gray background is the average SSN index.
