Computer Ephemeris for 2018 from DE200/LE200.

Orbital parameters of the Sun.

   Date       Mean    Perigee       Mean   Paral Aberrat    Epsilon  Nutat
         longitude  longitude    anomaly    "       "           "       "
Dec  23   271.7338   283.2474   348.4864   8.940  20.830  2326 5.67   -7.37
Jan   2   281.5903   283.2479   358.3424   8.944  20.838       5.76   -7.26
     12   291.4468   283.2484     8.1984   8.942  20.834       5.92   -7.08
     22   301.3032   283.2489    18.0544   8.935  20.819       6.14   -6.85
Feb   1   311.1597   283.2493    27.9104   8.925  20.796       6.39   -6.59
     11   321.0162   283.2498    37.7664   8.910  20.761       6.64   -6.33
     21   330.8727   283.2503    47.6224   8.893  20.719       6.88   -6.08
Mar   3   340.7291   283.2507    57.4784   8.872  20.672       7.07   -5.87
     13   350.5856   283.2512    67.3344   8.849  20.617       7.21   -5.72
     23     0.4421   283.2517    77.1904   8.824  20.560       7.27   -5.64
Apr   2    10.2986   283.2521    87.0464   8.799  20.502       7.27   -5.63
     12    20.1550   283.2526    96.9024   8.774  20.443       7.21   -5.68
     22    30.0115   283.2531   106.7584   8.750  20.386       7.10   -5.77
May   2    39.8680   283.2536   116.6144   8.727  20.334       6.97   -5.90
     12    49.7244   283.2540   126.4704   8.706  20.285       6.83   -6.02
     22    59.5809   283.2545   136.3264   8.688  20.243       6.71   -6.13
Jun   1    69.4374   283.2550   146.1824   8.673  20.209       6.62   -6.21
     11    79.2939   283.2554   156.0384   8.661  20.181       6.58   -6.23
     21    89.1503   283.2559   165.8944   8.654  20.163       6.61   -6.19
Jul   1    99.0068   283.2564   175.7504   8.650  20.155       6.69   -6.09
     11   108.8633   283.2569   185.6064   8.650  20.154       6.84   -5.94
     21   118.7198   283.2573   195.4624   8.655  20.165       7.04   -5.73
     31   128.5762   283.2578   205.3184   8.663  20.185       7.27   -5.48
Aug  10   138.4327   283.2583   215.1744   8.675  20.212       7.52   -5.22
     20   148.2892   283.2587   225.0304   8.691  20.248       7.76   -4.96
     30   158.1457   283.2592   234.8864   8.709  20.292       7.98   -4.73
Sep   9   168.0021   283.2597   244.7424   8.730  20.340       8.15   -4.55
     19   177.8586   283.2602   254.5985   8.753  20.395       8.27   -4.42
     29   187.7151   283.2606   264.4545   8.778  20.452       8.32   -4.35
Oct   9   197.5716   283.2611   274.3105   8.803  20.509       8.31   -4.35
     19   207.4280   283.2616   284.1665   8.828  20.569       8.24   -4.41
     29   217.2845   283.2620   294.0225   8.852  20.626       8.13   -4.51
Nov   8   227.1410   283.2625   303.8785   8.875  20.678       7.99   -4.64
     18   236.9974   283.2630   313.7345   8.896  20.727       7.85   -4.76
     28   246.8539   283.2634   323.5905   8.913  20.768       7.74   -4.86
Dec   8   256.7104   283.2639   333.4465   8.927  20.799       7.68   -4.91
     18   266.5669   283.2644   343.3025   8.937  20.823       7.68   -4.89
     28   276.4233   283.2649   353.1585   8.943  20.836       7.75   -4.81
Jan   7   286.2798   283.2653     3.0145   8.943  20.837       7.90   -4.65

     Daily movements (degrees) of 
          Mean longitude = 0.985647
          Mean anomaly   = 0.985600

     Duration of years (days):
          Tropical    = 365.24218993 - 0.00000614 * T
          Sidereal    = 365.25636331 + 0.00000012 * T
          Anomalistic = 365.25963535 + 0.00000325 * T