Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 16, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2725 | S10 | E32 | 01 | 0000 | Alpha | Oct 19, 2018 | Oct 26, 2018 | Nov 9, 2018 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1989 to October 2018. The gray background is the average SSN index.
