Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 20, 2013. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1877 | S12 | E62 | 04 | 0260 | Beta | Oct 26, 2013 | Nov 1, 2013 | Nov 15, 2013 |
| № 1875 | N08 | E47 | 15 | 0150 | Beta-Gamma | Oct 24, 2013 | Oct 31, 2013 | Nov 14, 2013 |
| № 1874 | S11 | W05 | 06 | 0040 | Beta | Oct 21, 2013 | Oct 27, 2013 | Nov 10, 2013 |
| № 1873 | N12 | E24 | 06 | 0020 | Beta | Oct 23, 2013 | Oct 30, 2013 | Nov 12, 2013 |
| № 1872 | S17 | E16 | 01 | 0080 | Alpha | Oct 22, 2013 | Oct 29, 2013 | Nov 12, 2013 |
| № 1870 | S15 | W71 | 03 | 0010 | Beta | Oct 16, 2013 | Oct 22, 2013 | Nov 5, 2013 |
| № 1869 | N20 | W04 | 01 | 0020 | Alpha | Oct 21, 2013 | Oct 28, 2013 | Nov 10, 2013 |
| № 1868 | N23 | W29 | 03 | 0040 | Beta | Oct 19, 2013 | Oct 26, 2013 | Nov 8, 2013 |
| № 1864 | S22 | W84 | 01 | 0030 | Alpha | Oct 14, 2013 | Oct 21, 2013 | Nov 4, 2013 |
| № 1861 | S07 | W90 | 09 | 0240 | Beta-Gamma | Oct 14, 2013 | Oct 21, 2013 | Nov 3, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to October 2013. The gray background is the average SSN index.
