No image for the selected date
Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 20, 1998. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8309 | N18 | E29 | 02 | 0000 | ALPHA | Aug 23, 1998 | Aug 30, 1998 | Sep 13, 1998 |
| № 8308 | S22 | E59 | 02 | 0110 | ALPHA | Aug 25, 1998 | Sep 1, 1998 | Sep 15, 1998 |
| № 8307 | N32 | E73 | 07 | 0330 | BETA | Aug 27, 1998 | Sep 3, 1998 | Sep 17, 1998 |
| № 8306 | N27 | E31 | 02 | 0050 | ALPHA | Aug 23, 1998 | Aug 30, 1998 | Sep 13, 1998 |
| № 8305 | S24 | W45 | 02 | 0010 | BETA | Aug 17, 1998 | Aug 24, 1998 | Sep 7, 1998 |
| № 8304 | S30 | E17 | 04 | 0090 | BETA | Aug 22, 1998 | Aug 29, 1998 | Sep 13, 1998 |
| № 8303 | N20 | W13 | 05 | 0020 | BETA | Aug 20, 1998 | Aug 27, 1998 | Sep 10, 1998 |
| № 8301 | S22 | W57 | 01 | 0100 | ALPHA | Aug 17, 1998 | Aug 23, 1998 | Sep 6, 1998 |
| № 8299 | N16 | W79 | 06 | 0320 | BETA | Aug 15, 1998 | Aug 22, 1998 | Sep 4, 1998 |
| № 8297 | N31 | W91 | 01 | 0120 | ALPHA | Aug 14, 1998 | Aug 21, 1998 | Sep 4, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to August 1998. The gray background is the average SSN index.
