Sunspots and active regions — January 18, 2021
Sunspots and active regions
By the end of the day, the following active regions with sunspots could be observed on the Sun's surface
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 2797 | S18 | E76 | 02 | 0090 | Alpha | Jan 25, 2021 | Feb 1, 2021 | Feb 14, 2021 |
| № 2796 | S21 | W32 | 01 | 0010 | Alpha | Jan 17, 2021 | Jan 23, 2021 | Feb 6, 2021 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1992, January to 2021, January. Gray background - average solar cycle.
