Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on January 17, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9312 | N08 | E62 | 02 | 0060 | Alpha | Jan 23, 2001 | Jan 29, 2001 | Feb 12, 2001 |
| № 9311 | N04 | E38 | 07 | 0030 | Beta | Jan 21, 2001 | Jan 27, 2001 | Feb 10, 2001 |
| № 9310 | N26 | E24 | 01 | 0000 | Alpha | Jan 20, 2001 | Jan 27, 2001 | Feb 10, 2001 |
| № 9308 | N14 | W26 | 16 | 0100 | Beta | Jan 16, 2001 | Jan 23, 2001 | Feb 5, 2001 |
| № 9306 | N11 | W51 | 28 | 0330 | Beta-Gamma | Jan 14, 2001 | Jan 21, 2001 | Feb 3, 2001 |
| № 9304 | N11 | W68 | 01 | 0020 | Alpha | Jan 13, 2001 | Jan 20, 2001 | Feb 2, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to January 2001. The gray background is the average SSN index.
