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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on July 3, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8617 | N14 | W26 | 06 | 0010 | BETA | Jul 2, 1999 | Jul 9, 1999 | Jul 22, 1999 |
| № 8616 | N29 | W71 | 03 | 0030 | BETA | Jun 28, 1999 | Jul 5, 1999 | Jul 19, 1999 |
| № 8615 | S29 | E65 | 01 | 0090 | ALPHA | Jul 9, 1999 | Jul 16, 1999 | Jul 30, 1999 |
| № 8614 | N20 | E65 | 05 | 0090 | BETA | Jul 9, 1999 | Jul 16, 1999 | Jul 29, 1999 |
| № 8613 | N19 | E45 | 01 | 0030 | ALPHA | Jul 7, 1999 | Jul 14, 1999 | Jul 28, 1999 |
| № 8611 | S25 | W05 | 42 | 0370 | BETA-GAMMA | Jul 3, 1999 | Jul 10, 1999 | Jul 24, 1999 |
| № 8610 | N12 | W52 | 01 | 0000 | ALPHA | Jun 30, 1999 | Jul 7, 1999 | Jul 20, 1999 |
| № 8606 | N17 | W70 | 03 | 0010 | BETA | Jun 29, 1999 | Jul 5, 1999 | Jul 19, 1999 |
| № 8603 | S15 | W36 | 26 | 0220 | BETA-GAMMA | Jul 1, 1999 | Jul 8, 1999 | Jul 22, 1999 |
| № 8602 | N18 | W46 | 11 | 0270 | BETA | Jun 30, 1999 | Jul 7, 1999 | Jul 21, 1999 |
| № 8598 | N22 | W77 | 09 | 0130 | BETA | Jun 28, 1999 | Jul 5, 1999 | Jul 19, 1999 |
| № 8594 | N16 | W74 | 04 | 0020 | BETA | Jun 28, 1999 | Jul 5, 1999 | Jul 19, 1999 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1970 to July 1999. The gray background is the average SSN index.
