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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on July 27, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8282 | N32 | E16 | 19 | 0560 | BETA-DELTA | Jul 29, 1998 | Aug 5, 1998 | Aug 20, 1998 |
| № 8281 | N16 | E08 | 03 | 0010 | BETA | Jul 29, 1998 | Aug 4, 1998 | Aug 18, 1998 |
| № 8280 | S24 | E14 | 13 | 0450 | BETA | Jul 29, 1998 | Aug 5, 1998 | Aug 19, 1998 |
| № 8279 | N24 | W36 | 05 | 0020 | BETA | Jul 25, 1998 | Aug 1, 1998 | Aug 15, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to July 1998. The gray background is the average SSN index.
