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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 4, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8295 | N13 | E01 | 02 | 0000 | BETA | Aug 5, 1998 | Aug 12, 1998 | Aug 26, 1998 |
| № 8294 | N17 | E03 | 07 | 0020 | BETA | Aug 5, 1998 | Aug 12, 1998 | Aug 26, 1998 |
| № 8293 | S20 | E60 | 06 | 0200 | BETA | Aug 10, 1998 | Aug 16, 1998 | Aug 30, 1998 |
| № 8290 | N16 | E24 | 01 | 0000 | ALPHA | Aug 7, 1998 | Aug 14, 1998 | Aug 27, 1998 |
| № 8288 | S28 | E11 | 01 | 0000 | ALPHA | Aug 6, 1998 | Aug 13, 1998 | Aug 27, 1998 |
| № 8286 | N19 | W35 | 02 | 0020 | BETA | Aug 2, 1998 | Aug 9, 1998 | Aug 23, 1998 |
| № 8283 | N26 | W22 | 01 | 0030 | ALPHA | Aug 3, 1998 | Aug 10, 1998 | Aug 24, 1998 |
| № 8282 | N30 | W83 | 01 | 0090 | ALPHA | Jul 29, 1998 | Aug 6, 1998 | Aug 20, 1998 |
| № 8280 | S20 | W97 | 01 | 0100 | ALPHA | Jul 29, 1998 | Aug 4, 1998 | Aug 18, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to August 1998. The gray background is the average SSN index.
