Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on January 18, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8836 | S12 | E37 | 04 | 0010 | BETA | Jan 22, 2000 | Jan 29, 2000 | Feb 11, 2000 |
| № 8835 | N09 | E30 | 02 | 0000 | BETA | Jan 21, 2000 | Jan 28, 2000 | Feb 11, 2000 |
| № 8834 | S15 | W87 | 02 | 0030 | BETA | Jan 12, 2000 | Jan 19, 2000 | Feb 2, 2000 |
| № 8833 | N17 | E26 | 05 | 0120 | BETA | Jan 21, 2000 | Jan 28, 2000 | Feb 11, 2000 |
| № 8832 | S18 | W54 | 05 | 0030 | BETA | Jan 15, 2000 | Jan 22, 2000 | Feb 4, 2000 |
| № 8831 | S18 | E14 | 23 | 0270 | BETA | Jan 20, 2000 | Jan 27, 2000 | Feb 10, 2000 |
| № 8830 | S14 | W49 | 03 | 0010 | BETA | Jan 15, 2000 | Jan 22, 2000 | Feb 5, 2000 |
| № 8829 | N15 | W04 | 08 | 0120 | BETA | Jan 19, 2000 | Jan 26, 2000 | Feb 8, 2000 |
| № 8828 | S23 | W21 | 10 | 0070 | BETA | Jan 17, 2000 | Jan 24, 2000 | Feb 7, 2000 |
| № 8825 | N11 | W30 | 06 | 0030 | BETA | Jan 17, 2000 | Jan 24, 2000 | Feb 6, 2000 |
| № 8824 | S13 | W30 | 37 | 0270 | BETA | Jan 17, 2000 | Jan 24, 2000 | Feb 6, 2000 |
| № 8821 | N27 | W60 | 02 | 0070 | BETA | 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.
