palEvp
palEvp
- Returns the barycentric and heliocentric velocity and position of the
Earth
- Description:
- Returns the barycentric and heliocentric velocity and position of the
Earth at a given epoch, given with respect to a specified equinox.
For information about accuracy, see the function iauEpv00.
- Invocation:
- void palEvp( double date, double deqx, double dvb[3], double dpb[3],
double dvh[3], double dph[3] )
- Arguments:
-
-
date = double (Given)
-
TDB (loosely ET) as a Modified Julian Date (JD-2400000.5)
-
deqx = double (Given)
-
Julian epoch (e.g. 2000.0) of mean equator and equinox of the
vectors returned. If deqx
= 0.0, all vectors are referred to the
mean equator and equinox (FK5) of epoch date.
-
dvb = double[3] (Returned)
-
Barycentric velocity (AU/s, AU)
-
dpb = double[3] (Returned)
-
Barycentric position (AU/s, AU)
-
dvh = double[3] (Returned)
-
heliocentric velocity (AU/s, AU)
-
dph = double[3] (Returned)
-
Heliocentric position (AU/s, AU)