Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on January 28, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9327 | N17 | E49 | 02 | 0010 | Beta | Feb 2, 2001 | Feb 8, 2001 | Feb 22, 2001 |
| № 9326 | N27 | W38 | 05 | 0050 | Beta | Jan 26, 2001 | Feb 2, 2001 | Feb 16, 2001 |
| № 9325 | N11 | E39 | 06 | 0060 | Beta | Feb 1, 2001 | Feb 8, 2001 | Feb 21, 2001 |
| № 9322 | S22 | W54 | 05 | 0050 | Beta | Jan 25, 2001 | Feb 1, 2001 | Feb 14, 2001 |
| № 9321 | S05 | W08 | 28 | 0250 | Beta | Jan 28, 2001 | Feb 4, 2001 | Feb 18, 2001 |
| № 9316 | S16 | W27 | 05 | 0040 | Beta | Jan 27, 2001 | Feb 3, 2001 | Feb 16, 2001 |
| № 9313 | S06 | W50 | 13 | 0120 | Beta-Gamma | Jan 25, 2001 | Feb 1, 2001 | Feb 14, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to January 2001. The gray background is the average SSN index.
