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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 23, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8035 | N17 | E60 | 02 | 0010 | BETA | Apr 29, 1997 | May 6, 1997 | May 19, 1997 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1968 to April 1997. The gray background is the average SSN index.
