Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 21, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 165 | N20 | E73 | 01 | 0180 | Alpha | Oct 27, 2002 | Nov 3, 2002 | Nov 17, 2002 |
| № 164 | N11 | E56 | 01 | 0020 | Alpha | Oct 26, 2002 | Nov 2, 2002 | Nov 15, 2002 |
| № 162 | N26 | E48 | 32 | 0960 | Beta-Gamma | Oct 26, 2002 | Nov 2, 2002 | Nov 16, 2002 |
| № 160 | S21 | W24 | 28 | 0130 | Beta-Gamma | Oct 20, 2002 | Oct 27, 2002 | Nov 10, 2002 |
| № 159 | S12 | W20 | 06 | 0060 | Beta | Oct 20, 2002 | Oct 27, 2002 | Nov 10, 2002 |
| № 158 | S07 | W30 | 10 | 0100 | Beta | Oct 20, 2002 | Oct 26, 2002 | Nov 9, 2002 |
| № 154 | S14 | W60 | 01 | 0010 | Alpha | Oct 17, 2002 | Oct 24, 2002 | Nov 7, 2002 |
| № 149 | N14 | W73 | 09 | 0250 | Beta-Gamma | Oct 16, 2002 | Oct 23, 2002 | Nov 6, 2002 |
| № 145 | N11 | W83 | 01 | 0060 | Alpha | Oct 16, 2002 | Oct 22, 2002 | Nov 5, 2002 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1973 to October 2002. The gray background is the average SSN index.
