Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 18, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9168 | N09 | E08 | 03 | 0010 | BETA | Sep 19, 2000 | Sep 26, 2000 | Oct 10, 2000 |
| № 9167 | N11 | E71 | 05 | 0170 | BETA | Sep 24, 2000 | Oct 1, 2000 | Oct 15, 2000 |
| № 9166 | S14 | E39 | 32 | 0340 | BETA | Sep 22, 2000 | Sep 29, 2000 | Oct 12, 2000 |
| № 9165 | N14 | W24 | 32 | 0230 | BETA-GAMMA | Sep 17, 2000 | Sep 24, 2000 | Oct 7, 2000 |
| № 9164 | S13 | W67 | 05 | 0030 | BETA | Sep 14, 2000 | Sep 21, 2000 | Oct 4, 2000 |
| № 9161 | N06 | W26 | 09 | 0070 | BETA | Sep 17, 2000 | Sep 24, 2000 | Oct 7, 2000 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1971 to September 2000. The gray background is the average SSN index.
