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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on June 9, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8578 | N19 | E04 | 05 | 0020 | BETA | Jun 10, 1999 | Jun 17, 1999 | Jul 1, 1999 |
| № 8577 | N19 | W37 | 03 | 0010 | BETA | Jun 7, 1999 | Jun 14, 1999 | Jun 28, 1999 |
| № 8576 | S29 | E26 | 07 | 0010 | BETA | Jun 12, 1999 | Jun 19, 1999 | Jul 3, 1999 |
| № 8575 | N14 | E07 | 04 | 0010 | BETA | Jun 11, 1999 | Jun 17, 1999 | Jul 1, 1999 |
| № 8574 | N28 | E01 | 25 | 0260 | BETA | Jun 10, 1999 | Jun 17, 1999 | Jul 1, 1999 |
| № 8571 | S19 | E23 | 15 | 0210 | BETA | Jun 12, 1999 | Jun 19, 1999 | Jul 2, 1999 |
| № 8570 | S13 | E21 | 01 | 0050 | ALPHA | Jun 12, 1999 | Jun 18, 1999 | Jul 2, 1999 |
| № 8569 | N18 | E20 | 06 | 0080 | BETA | Jun 12, 1999 | Jun 18, 1999 | Jul 2, 1999 |
| № 8564 | S15 | W26 | 04 | 0010 | BETA | Jun 8, 1999 | Jun 15, 1999 | Jun 29, 1999 |
| № 8562 | S15 | W83 | 08 | 0230 | BETA | Jun 4, 1999 | Jun 11, 1999 | Jun 24, 1999 |
| № 8558 | N15 | W76 | 04 | 0120 | BETA | Jun 4, 1999 | Jun 11, 1999 | Jun 25, 1999 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1970 to June 1999. The gray background is the average SSN index.
