Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 4, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 103 | N15 | E75 | 09 | 0130 | Beta | Sep 11, 2002 | Sep 17, 2002 | Oct 1, 2002 |
| № 102 | N08 | E55 | 02 | 0040 | Alpha | Sep 9, 2002 | Sep 16, 2002 | Sep 29, 2002 |
| № 101 | S03 | E46 | 03 | 0070 | Alpha | Sep 8, 2002 | Sep 15, 2002 | Sep 29, 2002 |
| № 100 | S15 | E45 | 08 | 0160 | Beta | Sep 8, 2002 | Sep 15, 2002 | Sep 29, 2002 |
| № 99 | S05 | W00 | 14 | 0080 | Beta | Sep 5, 2002 | Sep 12, 2002 | Sep 25, 2002 |
| № 98 | S10 | E40 | 03 | 0040 | Alpha | Sep 8, 2002 | Sep 15, 2002 | Sep 28, 2002 |
| № 97 | N12 | W04 | 19 | 0070 | Beta | Sep 5, 2002 | Sep 11, 2002 | Sep 25, 2002 |
| № 96 | S14 | E27 | 17 | 0120 | Beta | Sep 7, 2002 | Sep 14, 2002 | Sep 27, 2002 |
| № 95 | N08 | E13 | 64 | 0750 | Beta-Gamma | Sep 6, 2002 | Sep 13, 2002 | Sep 26, 2002 |
| № 94 | S18 | E03 | 05 | 0140 | Beta | Sep 5, 2002 | Sep 12, 2002 | Sep 26, 2002 |
| № 90 | S05 | W65 | 01 | 0090 | Alpha | Aug 31, 2002 | Sep 7, 2002 | Sep 20, 2002 |
| № 87 | S08 | W84 | 01 | 0060 | Alpha | Aug 30, 2002 | Sep 5, 2002 | Sep 19, 2002 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1973 to September 2002. The gray background is the average SSN index.
