palPm
palPm
- Apply corrections for proper motion a star RA,Dec
- Description:
- Apply corrections for proper motion to a star RA,Dec using the
SOFA routine iauStarpm.
- Invocation:
- void palPm ( double r0, double d0, double pr, double pd,
double px, double rv, double ep0, double ep1,
double
r1, double
d1 );
- Arguments:
-
-
r0 = double (Given)
-
RA at epoch ep0 (radians)
-
d0 = double (Given)
-
Dec at epoch ep0 (radians)
-
pr = double (Given)
-
RA proper motion in radians per year.
-
pd = double (Given)
-
Dec proper motion in radians per year.
-
px = double (Given)
-
Parallax (arcsec)
-
rv = double (Given)
-
Radial velocity (km/sec
ve if receding)
-
ep0 = double (Given)
-
Start epoch in years, assumed to be Julian.
-
ep1 = double (Given)
-
End epoch in years, assumed to be Julian.
-
r1 = double
(Returned)
-
RA at epoch ep1 (radians)
-
d1 = double
(Returned)
-
Dec at epoch ep1 (radians)
- Notes:
- Uses iauStarpm but ignores the status returns from that routine.
In particular note that parallax should not be zero when the
proper motions are non-zero. SLA/F allows parallax to be zero.
- Assumes all epochs are Julian epochs.