Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 15, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9166 | S13 | E73 | 03 | 0070 | BETA | Sep 21, 2000 | Sep 28, 2000 | Oct 12, 2000 |
| № 9165 | N13 | E16 | 20 | 0140 | BETA-GAMMA | Sep 17, 2000 | Sep 24, 2000 | Oct 7, 2000 |
| № 9164 | S15 | W25 | 02 | 0010 | ALPHA | Sep 14, 2000 | Sep 21, 2000 | Oct 4, 2000 |
| № 9163 | S17 | W34 | 02 | 0010 | ALPHA | Sep 13, 2000 | Sep 20, 2000 | Oct 4, 2000 |
| № 9162 | S32 | W61 | 05 | 0080 | BETA | Sep 11, 2000 | Sep 18, 2000 | Oct 2, 2000 |
| № 9158 | N31 | W20 | 01 | 0000 | ALPHA | Sep 14, 2000 | Sep 21, 2000 | Oct 6, 2000 |
| № 9156 | S26 | W51 | 06 | 0060 | BETA | Sep 12, 2000 | Sep 19, 2000 | Oct 3, 2000 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1971 to September 2000. The gray background is the average SSN index.
