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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 16, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8222 | N22 | E20 | 26 | 0140 | BETA | May 19, 1998 | May 26, 1998 | Jun 8, 1998 |
| № 8220 | S27 | E18 | 20 | 0080 | BETA | May 19, 1998 | May 26, 1998 | Jun 9, 1998 |
| № 8218 | S21 | W47 | 25 | 0200 | BETA | May 14, 1998 | May 20, 1998 | Jun 3, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to May 1998. The gray background is the average SSN index.
