Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 12, 2000. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9161 | N05 | E54 | 02 | 0010 | BETA | Sep 17, 2000 | Sep 24, 2000 | Oct 7, 2000 |
| № 9154 | S17 | W89 | 05 | 0120 | BETA | Sep 6, 2000 | Sep 13, 2000 | Sep 27, 2000 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1971 to September 2000. The gray background is the average SSN index.
