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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 29, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8323 | S21 | E78 | 01 | 0050 | ALPHA | Sep 5, 1998 | Sep 12, 1998 | Sep 26, 1998 |
| № 8322 | N21 | W02 | 09 | 0030 | BETA | Aug 30, 1998 | Sep 6, 1998 | Sep 20, 1998 |
| № 8321 | N32 | E57 | 01 | 0020 | ALPHA | Sep 4, 1998 | Sep 11, 1998 | Sep 25, 1998 |
| № 8320 | N16 | W78 | 02 | 0000 | BETA | Aug 24, 1998 | Aug 31, 1998 | Sep 14, 1998 |
| № 8319 | N18 | W19 | 44 | 0180 | BETA-GAMMA | Aug 29, 1998 | Sep 5, 1998 | Sep 18, 1998 |
| № 8315 | N26 | W09 | 03 | 0010 | BETA | Aug 30, 1998 | Sep 6, 1998 | Sep 20, 1998 |
| № 8314 | N16 | W15 | 03 | 0010 | BETA | Aug 29, 1998 | Sep 5, 1998 | Sep 19, 1998 |
| № 8308 | S22 | W64 | 01 | 0070 | ALPHA | Aug 25, 1998 | Sep 1, 1998 | Sep 15, 1998 |
| № 8307 | N32 | W43 | 13 | 0160 | BETA | Aug 27, 1998 | Sep 3, 1998 | Sep 17, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to August 1998. The gray background is the average SSN index.
