Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 23, 2002. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9919 | N11 | E82 | 01 | 0060 | Alpha | Apr 30, 2002 | May 7, 2002 | May 20, 2002 |
| № 9918 | N06 | E02 | 03 | 0010 | Beta | Apr 24, 2002 | May 1, 2002 | May 14, 2002 |
| № 9917 | S30 | E47 | 02 | 0020 | Beta | Apr 28, 2002 | May 5, 2002 | May 19, 2002 |
| № 9916 | S17 | E62 | 08 | 0150 | Beta | Apr 29, 2002 | May 5, 2002 | May 19, 2002 |
| № 9915 | N12 | E44 | 09 | 0120 | Beta | Apr 27, 2002 | May 4, 2002 | May 18, 2002 |
| № 9914 | N04 | E33 | 09 | 0150 | Beta | Apr 26, 2002 | May 3, 2002 | May 17, 2002 |
| № 9913 | S15 | W17 | 01 | 0020 | Alpha | Apr 23, 2002 | Apr 29, 2002 | May 13, 2002 |
| № 9912 | N10 | W23 | 15 | 0320 | Beta-Gamma | Apr 22, 2002 | Apr 29, 2002 | May 12, 2002 |
| № 9910 | S21 | W45 | 06 | 0080 | Beta | Apr 20, 2002 | Apr 27, 2002 | May 11, 2002 |
| № 9909 | N08 | W35 | 01 | 0050 | Alpha | Apr 21, 2002 | Apr 28, 2002 | May 12, 2002 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1973 to April 2002. The gray background is the average SSN index.
