Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on January 20, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8838 | N12 | E53 | 06 | 0080 | BETA | Jan 25, 2000 | Feb 1, 2000 | Feb 14, 2000 |
| № 8837 | S09 | W42 | 10 | 0100 | BETA | Jan 18, 2000 | Jan 25, 2000 | Feb 7, 2000 |
| № 8836 | S13 | E12 | 02 | 0000 | ALPHA | Jan 22, 2000 | Jan 29, 2000 | Feb 11, 2000 |
| № 8835 | N08 | E02 | 01 | 0010 | ALPHA | Jan 21, 2000 | Jan 28, 2000 | Feb 10, 2000 |
| № 8833 | N17 | E02 | 08 | 0160 | BETA | Jan 21, 2000 | Jan 28, 2000 | Feb 11, 2000 |
| № 8832 | S15 | W81 | 01 | 0000 | ALPHA | Jan 15, 2000 | Jan 22, 2000 | Feb 4, 2000 |
| № 8831 | S18 | W12 | 23 | 0200 | BETA | Jan 20, 2000 | Jan 27, 2000 | Feb 10, 2000 |
| № 8830 | S15 | W73 | 03 | 0010 | BETA | Jan 15, 2000 | Jan 22, 2000 | Feb 5, 2000 |
| № 8829 | N16 | W32 | 04 | 0060 | BETA | Jan 19, 2000 | Jan 25, 2000 | Feb 8, 2000 |
| № 8828 | S23 | W47 | 05 | 0010 | BETA | Jan 17, 2000 | Jan 24, 2000 | Feb 7, 2000 |
| № 8824 | S13 | W57 | 12 | 0070 | BETA | Jan 17, 2000 | Jan 23, 2000 | Feb 6, 2000 |
| № 8821 | N26 | W88 | 01 | 0070 | ALPHA | Jan 14, 2000 | Jan 21, 2000 | Feb 4, 2000 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1971 to January 2000. The gray background is the average SSN index.
