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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on June 19, 1999. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8591 | N13 | W03 | 02 | 0010 | BETA | Jun 20, 1999 | Jun 27, 1999 | Jul 10, 1999 |
| № 8589 | N27 | W27 | 08 | 0040 | BETA | Jun 18, 1999 | Jun 25, 1999 | Jul 9, 1999 |
| № 8588 | S22 | W19 | 02 | 0010 | ALPHA | Jun 19, 1999 | Jun 26, 1999 | Jul 9, 1999 |
| № 8585 | N38 | E02 | 04 | 0140 | BETA | Jun 20, 1999 | Jun 28, 1999 | Jul 12, 1999 |
| № 8583 | S13 | W25 | 06 | 0020 | BETA | Jun 18, 1999 | Jun 25, 1999 | Jul 9, 1999 |
| № 8582 | N27 | W61 | 15 | 0090 | BETA | Jun 15, 1999 | Jun 22, 1999 | Jul 6, 1999 |
| № 8580 | S21 | W53 | 02 | 0220 | ALPHA | Jun 16, 1999 | Jun 23, 1999 | Jul 7, 1999 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1970 to June 1999. The gray background is the average SSN index.
