No image for the selected date
Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8365 | S29 | W02 | 04 | 0010 | BETA | Oct 21, 1998 | Oct 28, 1998 | Nov 11, 1998 |
| № 8364 | N19 | W00 | 04 | 0010 | BETA | Oct 21, 1998 | Oct 28, 1998 | Nov 10, 1998 |
| № 8363 | N25 | W08 | 16 | 0080 | BETA | Oct 20, 1998 | Oct 27, 1998 | Nov 10, 1998 |
| № 8362 | N20 | E22 | 01 | 0010 | ALPHA | Oct 23, 1998 | Oct 29, 1998 | Nov 12, 1998 |
| № 8361 | N14 | W64 | 10 | 0090 | BETA | Oct 16, 1998 | Oct 23, 1998 | Nov 5, 1998 |
| № 8360 | S20 | W76 | 06 | 0180 | BETA | Oct 15, 1998 | Oct 22, 1998 | Nov 5, 1998 |
| № 8358 | N15 | W80 | 05 | 0190 | BETA | Oct 15, 1998 | Oct 22, 1998 | Nov 4, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to October 1998. The gray background is the average SSN index.
