Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 18, 2023. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 3468 | S11 | E57 | 01 | 0130 | Alpha | Oct 23, 2023 | Oct 30, 2023 | Nov 13, 2023 |
| № 3465 | N10 | W09 | 19 | 0220 | Beta | Oct 18, 2023 | Oct 25, 2023 | Nov 8, 2023 |
| № 3464 | N04 | W32 | 07 | 0090 | Beta | Oct 17, 2023 | Oct 23, 2023 | Nov 6, 2023 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1994 to October 2023. The gray background is the average SSN index.
