Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 18, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 463 | N09 | E74 | 01 | 0090 | Alpha | Sep 25, 2003 | Oct 1, 2003 | Oct 15, 2003 |
| № 462 | S10 | W43 | 06 | 0030 | Beta | Sep 16, 2003 | Sep 23, 2003 | Oct 6, 2003 |
| № 461 | N12 | W52 | 12 | 0140 | Beta | Sep 15, 2003 | Sep 22, 2003 | Oct 5, 2003 |
| № 460 | N17 | E51 | 02 | 0040 | Beta | Sep 23, 2003 | Sep 30, 2003 | Oct 13, 2003 |
| № 459 | S11 | W01 | 12 | 0050 | 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.
