Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 30, 2018. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2723 | S08 | W01 | 03 | 0010 | Beta | Oct 1, 2018 | Oct 8, 2018 | Oct 21, 2018 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1989 to September 2018. The gray background is the average SSN index.
