Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 23, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9361 | S17 | E09 | 02 | 0000 | Beta | Feb 25, 2001 | Mar 3, 2001 | Mar 17, 2001 |
| № 9360 | S10 | E47 | 01 | 0030 | Alpha | Feb 27, 2001 | Mar 6, 2001 | Mar 20, 2001 |
| № 9359 | N12 | E54 | 10 | 0190 | Beta | Feb 28, 2001 | Mar 7, 2001 | Mar 20, 2001 |
| № 9358 | S08 | W03 | 05 | 0010 | Beta | Feb 24, 2001 | Mar 2, 2001 | Mar 16, 2001 |
| № 9357 | S26 | W18 | 03 | 0010 | Beta | Feb 22, 2001 | Mar 1, 2001 | Mar 15, 2001 |
| № 9356 | S15 | W64 | 02 | 0020 | Alpha | Feb 19, 2001 | Feb 26, 2001 | Mar 11, 2001 |
| № 9354 | S09 | W43 | 18 | 0200 | Beta | Feb 21, 2001 | Feb 27, 2001 | Mar 13, 2001 |
| № 9353 | S24 | W62 | 03 | 0010 | Beta | Feb 19, 2001 | Feb 26, 2001 | Mar 12, 2001 |
| № 9350 | N18 | W74 | 01 | 0050 | Alpha | Feb 18, 2001 | Feb 25, 2001 | Mar 11, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to February 2001. The gray background is the average SSN index.
