a. For Earth orbits the gravity model EIGEN-GLO4C given in [RN.1] shall be used.
NOTE The EIGEN-GLO4C model has a spatial resolution in latitude and longitude of 1° ⨉ 1° (corresponding to degree ⨉ order = 360 ⨉ 360).
b. Data on gravitational effects from tides and on Earth orientation parameters shall be obtained from the International Earth Rotation Service IERS given in [RN.2].
c. For third body gravitational perturbations the Development Ephemerides data on planets (DE-405) and the Lunar Ephemerides data (LE-405), both given in [RN.3], shall be used.
d. For planetary mass values the 2003 standards of the International Earth Rotation Services IERS, as described in IERS Technical Note 32 [RN.2], shall be used.