Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 16, 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 | S14 | E60 | 10 | 0270 | BETA | Sep 22, 2000 | Sep 28, 2000 | Oct 12, 2000 |
| № 9165 | N14 | E01 | 28 | 0400 | BETA-DELTA | Sep 17, 2000 | Sep 24, 2000 | Oct 8, 2000 |
| № 9164 | S14 | W42 | 03 | 0020 | BETA | Sep 14, 2000 | Sep 21, 2000 | Oct 4, 2000 |
| № 9162 | S32 | W75 | 02 | 0040 | BETA | Sep 11, 2000 | Sep 18, 2000 | Oct 2, 2000 |
| № 9161 | N06 | W00 | 06 | 0040 | BETA | Sep 17, 2000 | Sep 24, 2000 | Oct 7, 2000 |
| № 9156 | S26 | W67 | 04 | 0070 | 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.
