Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 15, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9350 | N18 | E32 | 02 | 0060 | Alpha | Feb 18, 2001 | Feb 25, 2001 | Mar 11, 2001 |
| № 9349 | N28 | E10 | 01 | 0030 | Alpha | Feb 17, 2001 | Feb 24, 2001 | Mar 10, 2001 |
| № 9348 | N15 | W43 | 11 | 0060 | Beta | Feb 13, 2001 | Feb 19, 2001 | Mar 5, 2001 |
| № 9347 | N04 | E01 | 04 | 0030 | Beta | Feb 16, 2001 | Feb 23, 2001 | Mar 8, 2001 |
| № 9342 | S28 | W43 | 05 | 0030 | Beta | Feb 12, 2001 | Feb 20, 2001 | Mar 6, 2001 |
| № 9339 | S09 | W64 | 02 | 0100 | Alpha | Feb 11, 2001 | Feb 18, 2001 | Mar 3, 2001 |
| № 9338 | S20 | W67 | 04 | 0120 | Beta | Feb 11, 2001 | Feb 18, 2001 | Mar 3, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to February 2001. The gray background is the average SSN index.
