Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 11, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9160 | S12 | W07 | 01 | 0000 | ALPHA | Sep 11, 2000 | Sep 18, 2000 | Oct 2, 2000 |
| № 9158 | N29 | E33 | 03 | 0020 | ALPHA | Sep 15, 2000 | Sep 22, 2000 | Oct 6, 2000 |
| № 9157 | N22 | E13 | 03 | 0010 | BETA | Sep 13, 2000 | Sep 20, 2000 | Oct 4, 2000 |
| № 9154 | S17 | W74 | 10 | 0210 | BETA | Sep 6, 2000 | Sep 13, 2000 | Sep 27, 2000 |
| № 9151 | N10 | W86 | 02 | 0010 | BETA | Sep 5, 2000 | Sep 12, 2000 | Sep 26, 2000 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1971 to September 2000. The gray background is the average SSN index.
