Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on January 23, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8841 | S30 | E57 | 05 | 0060 | BETA | Jan 28, 2000 | Feb 5, 2000 | Feb 19, 2000 |
| № 8840 | S24 | E09 | 03 | 0010 | BETA | Jan 25, 2000 | Feb 1, 2000 | Feb 15, 2000 |
| № 8839 | N12 | W20 | 11 | 0060 | BETA | Jan 22, 2000 | Jan 29, 2000 | Feb 12, 2000 |
| № 8838 | N12 | E14 | 06 | 0030 | BETA | Jan 25, 2000 | Feb 1, 2000 | Feb 14, 2000 |
| № 8837 | S07 | W82 | 04 | 0370 | BETA | Jan 18, 2000 | Jan 25, 2000 | Feb 7, 2000 |
| № 8835 | N11 | W38 | 01 | 0000 | ALPHA | Jan 21, 2000 | Jan 28, 2000 | Feb 11, 2000 |
| № 8833 | N18 | W38 | 01 | 0130 | ALPHA | Jan 21, 2000 | Jan 28, 2000 | Feb 11, 2000 |
| № 8831 | S17 | W53 | 04 | 0110 | BETA | Jan 20, 2000 | Jan 27, 2000 | Feb 10, 2000 |
| № 8829 | N16 | W72 | 01 | 0060 | ALPHA | Jan 19, 2000 | Jan 25, 2000 | Feb 8, 2000 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1971 to January 2000. The gray background is the average SSN index.
