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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on June 17, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8249 | S25 | E60 | 01 | 0060 | ALPHA | Jun 23, 1998 | Jun 30, 1998 | Jul 14, 1998 |
| № 8245 | S30 | W10 | 01 | 0000 | ALPHA | Jun 17, 1998 | Jun 24, 1998 | Jul 9, 1998 |
| № 8244 | N34 | W11 | 10 | 0030 | BETA | Jun 17, 1998 | Jun 24, 1998 | Jul 9, 1998 |
| № 8243 | N18 | E23 | 03 | 0180 | BETA | Jun 20, 1998 | Jun 27, 1998 | Jul 10, 1998 |
| № 8242 | S21 | E01 | 06 | 0020 | BETA | Jun 18, 1998 | Jun 25, 1998 | Jul 9, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to June 1998. The gray background is the average SSN index.
