The date points for the 179 year cycle are as follows

Group 1
1516.133; 1524.336; 1532.985; 1544.294; 1554.71; 1563.611; 1573.275; 1585.111; 1593.833; 1601.366; 1610; 1611.836; 1616.982; 1625.253; 1632.63; 1639.613; 1646.391; 1650.713; 1656.272; 1664.307; 1671.81; 1678.955;

Group 2
1694.861; 1703.272; 1712.138; 1722.036; 1733.441; 1742.157; 1751.527; 1764.339; 1772.579; 1780.052; 1787.746; 1791.377; 1796.149; 1804.272; 1811.433; 1818.605; 1825.519; 1829.691; 1835.097; 1843.261; 1850.883; 1858.264;

Group 3
1873.568; 1882.275; 1891.127; 1900.441; 1912.324; 1920.904; 1929.694; 1943.863; 1951.383; 1958.772; 1966.302; 1970.506; 1975.202; 1983.238; 1990.313; 1997.649; 2004.821; 2008.667; 2013.855; 2022.122; 2030.063; 2037.839;

Part Group 4
2052.103; 2061.291; 2069.996; 2079.458; 2091.219; 2099.444;

These are the exact dates at which the SSB – Position of Sun distance is at maximum or minimum. Looking at my opening post chart it can readily be seen that the shape of the curve follows a 179 year pattern by comparing it at 1516, 1694, 1873 and 2052 or any other 3 or 4 dates from the same relative positions in the above groups. My next chart shows that the speed of these cycles is slowing with a steady clear trend of about 0.05 years per cycle. For example, the average period between similar station points for Groups 1-2 was 178.82. This has since slowed down so the average period between station points for Groups 3-4 is 178.92, which as I pointed out = 25765/144 to an error of 0.001%.