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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 31, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8049 | S26 | E17 | 01 | 0000 | ALPHA | Jun 2, 1997 | Jun 9, 1997 | Jun 23, 1997 |
| № 8048 | S28 | E55 | 01 | 0000 | ALPHA | Jun 5, 1997 | Jun 12, 1997 | Jun 26, 1997 |
| № 8047 | N27 | E31 | 03 | 0030 | BETA | Jun 3, 1997 | Jun 10, 1997 | Jun 24, 1997 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1968 to May 1997. The gray background is the average SSN index.
