Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 21, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2710 | N16 | E75 | 02 | 0020 | Beta | May 28, 2018 | Jun 4, 2018 | Jun 17, 2018 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1989 to May 2018. The gray background is the average SSN index.
