Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on January 21, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8839 | N11 | E06 | 02 | 0010 | BETA | Jan 22, 2000 | Jan 29, 2000 | Feb 12, 2000 |
| № 8838 | N12 | E40 | 05 | 0070 | BETA | Jan 25, 2000 | Feb 1, 2000 | Feb 14, 2000 |
| № 8837 | S08 | W55 | 09 | 0220 | BETA | Jan 18, 2000 | Jan 25, 2000 | Feb 7, 2000 |
| № 8833 | N17 | W11 | 09 | 0170 | BETA | Jan 21, 2000 | Jan 28, 2000 | Feb 11, 2000 |
| № 8831 | S18 | W25 | 18 | 0210 | BETA | Jan 20, 2000 | Jan 27, 2000 | Feb 10, 2000 |
| № 8829 | N17 | W45 | 01 | 0070 | ALPHA | Jan 19, 2000 | Jan 25, 2000 | Feb 8, 2000 |
| № 8824 | S13 | W72 | 05 | 0020 | BETA | Jan 17, 2000 | Jan 23, 2000 | Feb 6, 2000 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1971 to January 2000. The gray background is the average SSN index.
