Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on June 21, 2017. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2664 | N18 | E74 | 01 | 0080 | Beta | Jun 27, 2017 | Jul 4, 2017 | Jul 18, 2017 |
| № 2663 | N14 | W70 | 01 | 0040 | Alpha | Jun 17, 2017 | Jun 23, 2017 | Jul 7, 2017 |
| № 2662 | N12 | W23 | 02 | 0050 | Alpha | Jun 20, 2017 | Jun 27, 2017 | Jul 11, 2017 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1988 to June 2017. The gray background is the average SSN index.
