First page of Computer Ephemeris for 2015 (DE200/LE200).

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Дата изменения: Tue Dec 23 11:17:33 2014
Дата индексирования: Sun Apr 10 00:44:01 2016
Кодировка:
Поисковые слова: perihelion

Computer Ephemeris for 2015 from DE200/LE200.

First page.

Epoch T = J2015.5 = date 2015 Jul 2.875 (JD2457206.375) = besselian epoch B2015.50161

Beginning of spring: Mar 20  22^h46.31^m
             summer: Jun 21  16^h39.11^m
             autumn: Sep 23   8^h21.54^m   
             winter: Dec 22   4^h48.99^m

Earth in perihelion: Jan 04   6.62^h
         aphelion  : Jul 06  19.69^h

Mean obliquity of ecliptic (eps) at J2015.5:  
                        23.437275^o = 23^o26^'14.19"

  Sin(eps) = 0.39774488          Cosec(eps) = 2.51417442
  Cos(eps) = 0.91749606            Sec(eps) = 1.08992294
  Tan(eps) = 0.43351127            Ctg(eps) = 2.30674511

Year precessional quantities for J2015.5:
     -- in right ascension    m =  46.1287"   =   3.07525^s
     -- in declination        n =  20.0418"   =   1.33612^s
     -- in longitude          p =  50.2944"   =   0.0139707^o
     -- lunar/solar          p₁ =  50.3885"   =   0.0139968^o
     -- planetary            q₁ =   0.1026"   =   0.0000285^o

Ecliptic rotation:
   angular velocity of --        p_i =   0.4699"    =   0.0001305^o
   longitude of real axis of --  P_j = 175.0180^o

Accumulated angle from J2000.0 to T:
-- precession in longitude        a =    779.537"  =   0.216538^o
-- of ecliptic rotation           b =      7.285"  =   0.002024^o
-- precession in right ascension  M =      47.6663^s
-- precession in declination      N =     310.6477"

Tm = (J2000.0 + T) / 2
180^o - P_j + a/2  for T_m             c =   5.1611^o
180^o - P_j - a/2  for T_m             c'=   4.9445^o

Matrix for transformation from J2000.0 to J2013.5
     0.99999286    -0.00346622    -0.00150611
     0.00346622     0.99999399    -0.00000261
     0.00150611    -0.00000261     0.99999887