Computer Ephemeris for 2019 from DE200/LE200.

Longitude of central meridian of Neptune.

                                System 3
 Date    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
    1   80.0  143.6   38.7  103.4  352.8   59.3  310.2   17.6   84.7  334.8   40.2  288.3
    2  256.2  319.8  215.0  279.7  169.1  235.7  126.5  194.0  261.1  151.1  216.5  104.6
    3   72.5  136.0   31.3   96.0  345.4   52.0  302.9   10.3   77.4  327.4   32.8  280.8
    4  248.7  312.3  207.5  272.3  161.8  228.4  119.3  186.7  253.8  143.8  209.0   97.1
    5   65.0  128.5   23.8   88.6  338.1   44.8  295.6    3.1   70.1  320.1   25.3  273.3
    6  241.2  304.8  200.1  264.9  154.4  221.1  112.0  179.4  246.5  136.4  201.6   89.6
    7   57.4  121.0   16.3   81.2  330.8   37.5  288.4  355.8   62.8  312.7   17.9  265.8
    8  233.7  297.3  192.6  257.5  147.1  213.8  104.8  172.2  239.2  129.0  194.2   82.1
    9   49.9  113.5    8.9   73.8  323.4   30.2  281.1  348.5   55.5  305.3   10.4  258.3
   10  226.2  289.8  185.2  250.1  139.8  206.5   97.5  164.9  231.8  121.6  186.7   74.6
   11   42.4  106.1    1.4   66.4  316.1   22.9  273.9  341.2   48.2  297.9    3.0  250.8
   12  218.7  282.3  177.7  242.8  132.4  199.3   90.2  157.6  224.5  114.3  179.3   67.1
   13   34.9   98.6  354.0   59.1  308.8   15.6  266.6  334.0   40.9  290.6  355.5  243.3
   14  211.1  274.8  170.3  235.4  125.1  192.0   83.0  150.3  217.2  106.9  171.8   59.6
   15   27.4   91.1  346.5   51.7  301.4    8.3  259.3  326.7   33.5  283.2  348.1  235.8
   16  203.6  267.3  162.8  228.0  117.8  184.7   75.7  143.1  209.9   99.5  164.3   52.1
   17   19.9   83.6  339.1   44.3  294.1    1.1  252.1  319.4   26.2  275.8  340.6  228.3
   18  196.1  259.8  155.4  220.6  110.5  177.4   68.4  135.8  202.5   92.1  156.9   44.6
   19   12.4   76.1  331.7   36.9  286.8  353.8  244.8  312.1   18.9  268.4  333.2  220.8
   20  188.6  252.4  148.0  213.2  103.2  170.2   61.2  128.5  195.2   84.7  149.4   37.1
   21    4.8   68.6  324.2   29.6  279.5  346.5  237.5  304.8   11.5  261.0  325.7  213.3
   22  181.1  244.9  140.5  205.9   95.8  162.9   53.9  121.2  187.9   77.3  142.0   29.6
   23  357.3   61.1  316.8   22.2  272.2  339.2  230.3  297.6    4.2  253.6  318.2  205.8
   24  173.6  237.4  133.1  198.5   88.5  155.6   46.7  113.9  180.5   69.9  134.5   22.1
   25  349.8   53.7  309.4   14.8  264.9  332.0  223.0  290.3  356.9  246.2  310.7  198.3
   26  166.1  229.9  125.7  191.2   81.2  148.3   39.4  106.6  173.2   62.5  127.0   14.5
   27  342.3   46.2  302.0    7.5  257.6  324.7  215.8  283.0  349.5  238.7  303.3  190.8
   28  158.6  222.5  118.3  183.8   73.9  141.1   32.1   99.3  165.8   55.0  119.5    7.0
   29  334.8         294.5    0.1  250.3  317.4  208.5  275.7  342.2  231.3  295.8  183.3
   30  151.1         110.8  176.5   66.6  133.8   24.9   92.0  158.5   47.6  112.0  359.5
   31  327.3         287.1         243.0         201.2  268.4         223.9         175.8