Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 11, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9349 | N28 | E60 | 01 | 0050 | Alpha | Feb 17, 2001 | Feb 24, 2001 | Mar 10, 2001 |
| № 9348 | N09 | E05 | 03 | 0010 | Beta | Feb 12, 2001 | Feb 19, 2001 | Mar 5, 2001 |
| № 9347 | N03 | E51 | 04 | 0040 | Beta | Feb 16, 2001 | Feb 23, 2001 | Mar 8, 2001 |
| № 9345 | S20 | W07 | 07 | 0030 | Beta | Feb 11, 2001 | Feb 18, 2001 | Mar 4, 2001 |
| № 9344 | N30 | W14 | 02 | 0010 | Beta | Feb 11, 2001 | Feb 18, 2001 | Mar 4, 2001 |
| № 9341 | S10 | W30 | 03 | 0010 | Beta | Feb 10, 2001 | Feb 17, 2001 | Mar 2, 2001 |
| № 9339 | S10 | W08 | 06 | 0130 | Beta | Feb 11, 2001 | Feb 18, 2001 | Mar 4, 2001 |
| № 9338 | S20 | W15 | 24 | 0170 | Beta-Gamma | Feb 11, 2001 | Feb 18, 2001 | Mar 4, 2001 |
| № 9335 | N11 | W29 | 02 | 0030 | Alpha | Feb 10, 2001 | Feb 17, 2001 | Mar 2, 2001 |
| № 9334 | N12 | W42 | 09 | 0050 | Beta | Feb 9, 2001 | Feb 16, 2001 | Mar 1, 2001 |
| № 9330 | N22 | W80 | 01 | 0020 | Alpha | Feb 6, 2001 | Feb 13, 2001 | Feb 27, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to February 2001. The gray background is the average SSN index.
