Computer Ephemeris for 2019 from DE200/LE200.

First page.

Epoch T = J2019.5 = date 2019 Jul 2.875 (JD2458667.375) = besselian epoch B2019.50169

Beginning of spring: Mar 20  21h59.67m
             summer: Jun 21  15h55.44m
             autumn: Sep 23   7h51.38m   
             winter: Dec 22   4h20.65m

Earth in perihelion: Jan 03   5.35h
         aphelion  : Jul 04  22.20h

Mean obliquity of ecliptic (eps) at J2019.5:
                        23.436755o = 23o26'12.32"
  Sin(eps) = 0.39773655          Cosec(eps) = 2.51422707
  Cos(eps) = 0.91749967            Sec(eps) = 1.08991865
  Tan(eps) = 0.43350048            Ctg(eps) = 2.30680250

Year precessional quantities for J2019.5:
     -- in right ascension    m =  46.1298"   =   3.07532s
     -- in declination        n =  20.0414"   =   1.33610s
     -- in longitude          p =  50.2953"   =   0.0139709o
     -- lunar/solar          p1 =  50.3887"   =   0.0139969o
     -- planetary            q1 =   0.1018"   =   0.0000283o

Ecliptic rotation:
   angular velocity of --        pi =   0.4699"    =   0.0001305o
   longitude of real axis of --  Pj = 175.0546o

Accumulated angle from J2000.0 to T:
-- precession in longitude        a =    980.716"  =   0.272421o
-- of ecliptic rotation           b =      9.164"  =   0.002546o
-- precession in right ascension  M =      59.9688s
-- precession in declination      N =     390.8082"

Tm = (J2000.0 + T) / 2
180o - Pj + a/2  for Tm             c =   5.1707o
180o - Pj - a/2  for Tm             c'=   4.8983o

Matrix for transformation from J2000.0 to J2019.5
     0.99998870    -0.00436078    -0.00189476
     0.00436078     0.99999049    -0.00000413
     0.00189476    -0.00000413     0.99999820