No image for the selected date
Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 27, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8346 | S28 | E09 | 12 | 0120 | BETA | Sep 29, 1998 | Oct 6, 1998 | Oct 20, 1998 |
| № 8344 | S20 | W35 | 07 | 0070 | BETA | Sep 26, 1998 | Oct 3, 1998 | Oct 16, 1998 |
| № 8343 | N41 | W25 | 02 | 0000 | BETA | Sep 26, 1998 | Oct 4, 1998 | Oct 19, 1998 |
| № 8342 | N18 | W65 | 01 | 0080 | ALPHA | Sep 23, 1998 | Sep 30, 1998 | Oct 14, 1998 |
| № 8340 | N21 | W44 | 18 | 0350 | BETA | Sep 25, 1998 | Oct 2, 1998 | Oct 16, 1998 |
| № 8339 | S14 | W75 | 04 | 0080 | BETA | Sep 23, 1998 | Sep 29, 1998 | Oct 13, 1998 |
| № 8338 | N32 | W49 | 01 | 0070 | ALPHA | Sep 24, 1998 | Oct 2, 1998 | Oct 16, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to September 1998. The gray background is the average SSN index.
