Active areas
Sunspots and active regions
By the end of the day, the following active regions with sunspots could be observed on the Sun's surface
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 8810 | N38 | E32 | 11 | 0400 | BETA | Jan 2, 2000 | Jan 9, 2000 | Jan 24, 2000 |
| № 8809 | N22 | E15 | 04 | 0040 | BETA | Dec 31, 1999 | Jan 7, 2000 | Jan 21, 2000 |
| № 8806 | N19 | W66 | 20 | 0520 | BETA-GAMMA-DELTA | Dec 25, 1999 | Jan 1, 2000 | Jan 15, 2000 |
| № 8804 | S17 | W78 | 02 | 0170 | ALPHA | Dec 24, 1999 | Dec 31, 1999 | Jan 14, 2000 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1970, January to 1999, December. Gray background - average solar cycle.
