Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 21, 2003. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 464 | N05 | E73 | 06 | 0360 | Beta | Sep 28, 2003 | Oct 5, 2003 | Oct 18, 2003 |
| № 463 | N08 | E29 | 01 | 0070 | Alpha | Sep 24, 2003 | Oct 1, 2003 | Oct 15, 2003 |
| № 462 | S10 | W94 | 01 | 0050 | Alpha | Sep 15, 2003 | Sep 22, 2003 | Oct 6, 2003 |
| № 460 | N17 | E03 | 03 | 0010 | Alpha | Sep 23, 2003 | Sep 29, 2003 | Oct 13, 2003 |
| № 459 | S12 | W45 | 11 | 0100 | Beta | Sep 19, 2003 | Sep 26, 2003 | Oct 9, 2003 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1974 to September 2003. The gray background is the average SSN index.
