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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on June 27, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8610 | N11 | E27 | 04 | 0010 | BETA | Jun 30, 1999 | Jul 7, 1999 | Jul 20, 1999 |
| № 8609 | N16 | E21 | 02 | 0000 | ALPHA | Jun 30, 1999 | Jul 6, 1999 | Jul 20, 1999 |
| № 8608 | S12 | W05 | 03 | 0010 | BETA | Jun 28, 1999 | Jul 4, 1999 | Jul 18, 1999 |
| № 8607 | N22 | W52 | 03 | 0020 | BETA | Jun 24, 1999 | Jul 1, 1999 | Jul 15, 1999 |
| № 8606 | N17 | E09 | 13 | 0100 | BETA | Jun 29, 1999 | Jul 5, 1999 | Jul 19, 1999 |
| № 8604 | N11 | W81 | 05 | 0150 | BETA | Jun 22, 1999 | Jun 29, 1999 | Jul 12, 1999 |
| № 8603 | S16 | E44 | 24 | 0300 | BETA | Jul 1, 1999 | Jul 8, 1999 | Jul 22, 1999 |
| № 8602 | N17 | E36 | 21 | 0330 | BETA | Jul 1, 1999 | Jul 8, 1999 | Jul 21, 1999 |
| № 8600 | N17 | W79 | 01 | 0010 | ALPHA | Jun 22, 1999 | Jun 29, 1999 | Jul 12, 1999 |
| № 8599 | S16 | E14 | 11 | 0090 | BETA | Jun 29, 1999 | Jul 6, 1999 | Jul 20, 1999 |
| № 8598 | N23 | E03 | 50 | 0530 | BETA-GAMMA | Jun 28, 1999 | Jul 5, 1999 | Jul 19, 1999 |
| № 8596 | N22 | W11 | 01 | 0010 | ALPHA | Jun 27, 1999 | Jul 4, 1999 | Jul 18, 1999 |
| № 8594 | N13 | E01 | 20 | 0120 | BETA | Jun 28, 1999 | Jul 5, 1999 | Jul 18, 1999 |
| № 8592 | N22 | W20 | 01 | 0050 | ALPHA | Jun 26, 1999 | Jul 3, 1999 | Jul 17, 1999 |
| № 8585 | N37 | W91 | 01 | 0120 | ALPHA | Jun 21, 1999 | Jun 28, 1999 | Jul 12, 1999 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1970 to June 1999. The gray background is the average SSN index.
