Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 1, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9154 | S22 | E57 | 01 | 0020 | ALPHA | Sep 6, 2000 | Sep 13, 2000 | Sep 27, 2000 |
| № 9153 | S33 | E27 | 02 | 0020 | ALPHA | Sep 4, 2000 | Sep 11, 2000 | Sep 26, 2000 |
| № 9152 | N17 | E75 | 01 | 0020 | ALPHA | Sep 8, 2000 | Sep 15, 2000 | Sep 28, 2000 |
| № 9151 | N05 | E42 | 04 | 0020 | BETA | Sep 5, 2000 | Sep 12, 2000 | Sep 25, 2000 |
| № 9150 | N11 | E51 | 01 | 0010 | ALPHA | Sep 6, 2000 | Sep 13, 2000 | Sep 26, 2000 |
| № 9149 | N12 | E32 | 22 | 0310 | BETA-GAMMA | Sep 4, 2000 | Sep 11, 2000 | Sep 25, 2000 |
| № 9148 | S18 | E06 | 02 | 0000 | ALPHA | Sep 2, 2000 | Sep 9, 2000 | Sep 23, 2000 |
| № 9147 | N05 | E26 | 05 | 0110 | BETA | Sep 4, 2000 | Sep 11, 2000 | Sep 24, 2000 |
| № 9145 | S10 | E07 | 05 | 0050 | BETA | Sep 3, 2000 | Sep 9, 2000 | Sep 23, 2000 |
| № 9144 | N26 | W65 | 07 | 0100 | BETA | Aug 28, 2000 | Sep 4, 2000 | Sep 18, 2000 |
| № 9143 | S18 | W20 | 14 | 0120 | BETA | Aug 31, 2000 | Sep 7, 2000 | Sep 21, 2000 |
| № 9142 | N16 | W18 | 01 | 0020 | ALPHA | Sep 1, 2000 | Sep 7, 2000 | Sep 21, 2000 |
| № 9140 | N10 | W51 | 19 | 0170 | BETA | Aug 29, 2000 | Sep 5, 2000 | Sep 19, 2000 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1971 to September 2000. The gray background is the average SSN index.
