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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on July 28, 1997. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8066 | N24 | E48 | 03 | 0010 | BETA | Aug 2, 1997 | Aug 9, 1997 | Aug 22, 1997 |
| № 8065 | N16 | W80 | 06 | 0150 | BETA | Jul 23, 1997 | Jul 30, 1997 | Aug 12, 1997 |
| № 8064 | N22 | E06 | 02 | 0010 | ALPHA | Jul 29, 1997 | Aug 5, 1997 | Aug 19, 1997 |
| № 8062 | N28 | W63 | 02 | 0010 | ALPHA | Jul 24, 1997 | Jul 31, 1997 | Aug 14, 1997 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1968 to July 1997. The gray background is the average SSN index.
