Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9478 | N14 | E11 | 03 | 0010 | Beta | May 30, 2001 | Jun 6, 2001 | Jun 20, 2001 |
| № 9477 | S16 | E16 | 06 | 0040 | Beta | May 31, 2001 | Jun 6, 2001 | Jun 20, 2001 |
| № 9476 | S22 | W72 | 01 | 0020 | Alpha | May 24, 2001 | May 31, 2001 | Jun 14, 2001 |
| № 9475 | N17 | E55 | 03 | 0030 | Beta | Jun 2, 2001 | Jun 9, 2001 | Jun 23, 2001 |
| № 9474 | N19 | E38 | 05 | 0050 | Beta | Jun 1, 2001 | Jun 8, 2001 | Jun 22, 2001 |
| № 9473 | N12 | W04 | 02 | 0010 | Alpha | May 29, 2001 | Jun 5, 2001 | Jun 18, 2001 |
| № 9472 | N12 | E04 | 02 | 0010 | Alpha | May 30, 2001 | Jun 5, 2001 | Jun 19, 2001 |
| № 9468 | N06 | W20 | 14 | 0100 | Beta | May 28, 2001 | Jun 4, 2001 | Jun 17, 2001 |
| № 9467 | S06 | W30 | 01 | 0050 | Alpha | May 27, 2001 | Jun 3, 2001 | Jun 16, 2001 |
| № 9465 | S11 | W37 | 07 | 0010 | Beta | May 27, 2001 | Jun 2, 2001 | Jun 16, 2001 |
| № 9463 | N08 | W55 | 13 | 0490 | Beta-Gamma | May 25, 2001 | Jun 1, 2001 | Jun 14, 2001 |
| № 9462 | N21 | W58 | 01 | 0060 | Alpha | May 25, 2001 | Jun 1, 2001 | Jun 15, 2001 |
| № 9461 | N22 | W88 | 01 | 0030 | Alpha | May 23, 2001 | May 29, 2001 | Jun 12, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to May 2001. The gray background is the average SSN index.
