No image for the selected date
Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 29, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8524 | N22 | W00 | 19 | 0300 | BETA | Apr 30, 1999 | May 7, 1999 | May 21, 1999 |
| № 8523 | N32 | W07 | 11 | 0040 | BETA | Apr 29, 1999 | May 6, 1999 | May 21, 1999 |
| № 8522 | N18 | E02 | 05 | 0030 | BETA | Apr 30, 1999 | May 7, 1999 | May 21, 1999 |
| № 8518 | S13 | W74 | 01 | 0070 | ALPHA | Apr 24, 1999 | May 1, 1999 | May 15, 1999 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1970 to April 1999. The gray background is the average SSN index.
