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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 15, 1998. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8303 | N20 | E48 | 02 | 0000 | BETA | Aug 20, 1998 | Aug 27, 1998 | Sep 10, 1998 |
| № 8301 | S21 | E05 | 02 | 0120 | BETA | Aug 17, 1998 | Aug 24, 1998 | Sep 6, 1998 |
| № 8299 | N16 | W17 | 12 | 0510 | BETA-GAMMA-DELTA | Aug 15, 1998 | Aug 22, 1998 | Sep 5, 1998 |
| № 8297 | N31 | W33 | 06 | 0350 | BETA | Aug 14, 1998 | Aug 21, 1998 | Sep 4, 1998 |
| № 8293 | S23 | W82 | 08 | 0080 | BETA | Aug 10, 1998 | Aug 17, 1998 | Aug 31, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to August 1998. The gray background is the average SSN index.
