Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on January 21, 2001. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9318 | S05 | E07 | 02 | 0020 | Beta | Jan 22, 2001 | Jan 29, 2001 | Feb 12, 2001 |
| № 9316 | S17 | E66 | 07 | 0200 | Beta | Jan 27, 2001 | Feb 3, 2001 | Feb 16, 2001 |
| № 9313 | S07 | E44 | 14 | 0220 | Beta-Gamma | Jan 25, 2001 | Feb 1, 2001 | Feb 14, 2001 |
| № 9312 | N06 | E09 | 03 | 0010 | Beta | Jan 23, 2001 | Jan 29, 2001 | Feb 12, 2001 |
| № 9311 | N05 | W18 | 04 | 0060 | Beta | Jan 20, 2001 | Jan 27, 2001 | Feb 10, 2001 |
| № 9308 | N17 | W80 | 01 | 0010 | Alpha | Jan 16, 2001 | Jan 23, 2001 | Feb 5, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to January 2001. The gray background is the average SSN index.
