Due to the occurance of coordinate jumps, the station coordinates given in the tables below are valid for a specific period in time (indicated in the first column). The coordinate jumps are caused by station-specific equipment changes (see station log and/or EPN_discontinuities.snx).

To obtain the station positions at an epoch t different from t0, apply the station velocities: X(t) = X(t0) + (t-t0)*VX; Y(t) = Y(t0) + (t-t0)*VY; Z(t) = Z(t0) + (t-t0)*VZ

1. POSITIONS/VELOCITIES PUBLISHED BY EUREF

EUREF has classified VFCH00FRA (Villefranche-sur-Cher, France) as a class A station which means that it can used as fiducial station for EUREF densifications.

LATEST RELEASE

C2055 (July 25, 2019)

EPN_A_ETRF2000_C2055.SSC

ETRF2000 epoch t0 Position (m) Velocity (m/y)
X Y Z VX VY VZ
281/2012 - 152/2019 001/2010 4331862.637 ± 0.001 130055.211 ± 0.001 4664121.614 ± 0.001 -0.0003 ± 0.0001 -0.0001 ± 0.0001 -0.0007 ± 0.0001
174/2008 - 273/2012 001/2010 4331862.647 ± 0.001 130055.204 ± 0.001 4664121.624 ± 0.001 -0.0003 ± 0.0001 -0.0001 ± 0.0001 -0.0007 ± 0.0001
250/2001 - 166/2008 001/2010 4331862.640 ± 0.001 130055.204 ± 0.001 4664121.616 ± 0.001 -0.0003 ± 0.0001 -0.0001 ± 0.0001 -0.0007 ± 0.0001

EPN_A_ETRF2014_C2055.SSC

ETRF2014 epoch t0 Position (m) Velocity (m/y)
X Y Z VX VY VZ
281/2012 - 152/2019 001/2010 4331862.592 ± 0.001 130055.166 ± 0.001 4664121.660 ± 0.001 0.0000 ± 0.0001 0.0001 ± 0.0001 -0.0002 ± 0.0001
174/2008 - 273/2012 001/2010 4331862.602 ± 0.001 130055.159 ± 0.001 4664121.670 ± 0.001 0.0000 ± 0.0001 0.0001 ± 0.0001 -0.0002 ± 0.0001
250/2001 - 166/2008 001/2010 4331862.596 ± 0.001 130055.159 ± 0.001 4664121.662 ± 0.001 0.0000 ± 0.0001 0.0001 ± 0.0001 -0.0002 ± 0.0001

EPN_A_IGS14_C2055.SSC

IGS14 epoch t0 Position (m) Velocity (m/y)
X Y Z VX VY VZ
281/2012 - 152/2019 001/2010 4331862.330 ± 0.001 130055.546 ± 0.001 4664121.893 ± 0.001 -0.0124 ± 0.0001 0.0182 ± 0.0001 0.0109 ± 0.0001
174/2008 - 273/2012 001/2010 4331862.340 ± 0.001 130055.539 ± 0.001 4664121.903 ± 0.001 -0.0124 ± 0.0001 0.0182 ± 0.0001 0.0109 ± 0.0001
250/2001 - 166/2008 001/2010 4331862.333 ± 0.001 130055.539 ± 0.001 4664121.895 ± 0.001 -0.0124 ± 0.0001 0.0182 ± 0.0001 0.0109 ± 0.0001
plus_minus
PREVIOUS RELEASES

2. POSITIONS/VELOCITIES PUBLISHED BY THE IGS

IGS has not yet released coordinates for VFCH00FRA (Villefranche-sur-Cher, France).

3. POSITIONS/VELOCITIES PUBLISHED BY THE IERS

IERS has not yet released coordinates for VFCH00FRA (Villefranche-sur-Cher, France).

4. POSITION PUBLISHED WEEKLY IN THE EPN COMBINED SOLUTION

IGS08 epoch t0 Position (m) Velocity (m/y)
X Y Z VX VY VZ
022/2017 - 028/2017 025/2017 4331862.239 ± 0.000 130055.678 ± 0.000 4664121.970 ± 0.000 NANANA

5. POSITIONS PUBLISHED BY THE COUNTRY

The official ETRS89 coordinates used in France are maintained by IGN. This agency is fully responsible for the information kindly provided to the EPN:

Valid (from - to) epoch t0 Position (m) Velocity (m/y)
X Y Z VX VY VZ
277/2012 - now 001/2009 4331862.637 130055.210 4664121.616 NANANA
178/2011 - 277/2012 001/2009 4331862.649 130055.203 4664121.629 NANANA
169/2010 - 178/2011 001/2009 4331862.645 130055.204 4664121.625 NANANA
240/2001 - 169/2010 001/1993 4331862.640 130055.193 4664121.654 NANANA

Following a recent initiative of the EUREF Technical Working Group (Monitoring of official national ETRF coordinates on EPN web), the differences between the national coordinates and the latest cumulative EPN solutions (section 1) are regularly monitored. They are given in two maps: [horizontal differences] and [vertical differences].