DE200 : (includes nutations but not librations)

     JED 2305424.5 (1599 DEC 09)  to  JED 2513360.5  (2169 MAR 31)

     This ephemeris has been the basis of the Astronomical Almanac since 
     1984.  It is based upon the dynamical equator and equinox of J2000 
     (see Standish, 1982 and Standish, 1990).

DE403 : (includes both nutations and librations)

     JED 2433264.5 (1949 DEC 14)  to  JED 2469808.5 (2050 JAN 02)

     Tied to the International Celestial Reference Frame through comparison of
     UTPM estimates from Lunar Laser Ranging and VLBI

DE405 : (includes both nutations and librations)

     JED 2305424.50  (1599 DEC 09)  to  JED 2525008.50  (2201 FEB 20)

     Tied to the International Celestial Reference Frame through VLBI
     observations of the Magellan spacecraft in orbit around Venus.
     DE405 was created in May-June 1997.

DE406 : a "Long Ephemeris" (includes neither nutations nor 
        librations)

     JED 0624976.50 (-3001 FEB 04) to 2816912.50 (+3000 MAY 06)

     This is the same ephemeris as DE405, though the accuracy of the 
     interpolating polynomials has been lessened (interpolation on the 
     64-day mesh points remains exact, however).  For DE406/LE406, the 
     interpolating accuracy is no worse than 25 meters for any planet and 
     no worse than 1 meter for the moon.

     DE406 requires about 10 megabytes for each 300-year block.

DE410 : Specialzed ephemeris used for Mars Exploration Rover navigation
        (DE409 is identical except for the reference vale uf GM for Mars)
        Tied to ICRF by VLBI observations of Mars Global Surveyor and
        Mars Odyssey.

      Created  24 April 2003

DE413 : A special ephemeris to update the orbit of Pluto to aid in planning
       for an accolutation of a relatively bright start by Pluto's satellite Charon
       on 11 July 2005.

      Created 4 November 2004

DE414 : An ephemeris fit to ranging data from MGS and Odyssey through 2003
       in addition to many other data types for all planets.
       Integration covers 1599 to 2201. Some aspects are documented in
       Alex S Konopliv et al., Icarys vol 182, pp 23-50 (2006).

       Created May 2005 

DE118

This was the best available planetary ephemeris as of 1983, spanning the 1850-2050 time range, based on transit circle measurements since 1911, planetary radar since 1964, lunar laser ranging since 1969, and Viking spacecraft ranging on Mars since 1974. Its larger time span companion was DE102 [ref 3], which covered 1411 BD to 3002 AD. The major ephemerides leading to DE118 were DE96, DE102, DE108, and DE111 [ref 5]. All of these ephemerides, including DE118 are in the B1950 coordinate system.

DE200

This is DE118 rotated into the J2000 coordinate system [ref 4]. DE200 has been the basis for the calculation of Astronomical Almanac planetary tables since 1984.

DE125

Created in July 1985 for the Voyager encounter with Uranus [ref 6].

DE130

Created in October 1987 for the Voyager encounter with Neptune [ref 6].

DE202

This is DE130 rotated into the J2000 coordinate system. DE202 is more accurate for the outer planets than is DE200 [ref 6].

DE403

A new ephemeris [ref 7] aligned with the (J2000) reference frame of the Radio Source Catalog of the International Earth Rotation Service (IERS). It it based on planetary and reference frame data available in 1995.