Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 23, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 665 | N04 | W15 | 03 | 0010 | Beta | Aug 23, 2004 | Aug 30, 2004 | Sep 12, 2004 |
| № 664 | S10 | E12 | 22 | 0100 | Beta | Aug 25, 2004 | Sep 1, 2004 | Sep 14, 2004 |
| № 663 | N11 | E39 | 14 | 0180 | Beta | Aug 27, 2004 | Sep 3, 2004 | Sep 16, 2004 |
| № 662 | N13 | W27 | 06 | 0050 | Beta | Aug 22, 2004 | Aug 29, 2004 | Sep 11, 2004 |
| № 661 | N06 | W47 | 07 | 0430 | Beta | Aug 20, 2004 | Aug 27, 2004 | Sep 10, 2004 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1975 to August 2004. The gray background is the average SSN index.
