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 SOFI00BGR (Sofia, BGR) as a class A station which means that it can used as fiducial station for EUREF densifications.

LATEST RELEASE

C2160 (July 22, 2021)

EPN_A_ETRF2000_C2160.SSC

ETRF2000 epoch t0 Position (m) Velocity (m/y)
X Y Z VX VY VZ
120/2010 - 156/2021 001/2010 4319372.424 ± 0.001 1868687.543 ± 0.001 4292063.709 ± 0.001 0.0006 ± 0.0001 0.0006 ± 0.0001 -0.0027 ± 0.0001
232/1999 - 096/2010 001/2010 4319372.429 ± 0.001 1868687.545 ± 0.001 4292063.710 ± 0.001 0.0006 ± 0.0001 0.0006 ± 0.0001 -0.0027 ± 0.0001
160/1997 - 229/1999 001/2010 4319372.428 ± 0.001 1868687.543 ± 0.001 4292063.707 ± 0.001 0.0006 ± 0.0001 0.0006 ± 0.0001 -0.0027 ± 0.0001

EPN_A_ETRF2014_C2160.SSC

ETRF2014 epoch t0 Position (m) Velocity (m/y)
X Y Z VX VY VZ
120/2010 - 156/2021 001/2010 4319372.374 ± 0.001 1868687.495 ± 0.001 4292063.756 ± 0.001 0.0007 ± 0.0001 0.0007 ± 0.0001 -0.0021 ± 0.0001
232/1999 - 096/2010 001/2010 4319372.379 ± 0.001 1868687.497 ± 0.001 4292063.758 ± 0.001 0.0007 ± 0.0001 0.0007 ± 0.0001 -0.0021 ± 0.0001
160/1997 - 229/1999 001/2010 4319372.378 ± 0.001 1868687.495 ± 0.001 4292063.755 ± 0.001 0.0007 ± 0.0001 0.0007 ± 0.0001 -0.0021 ± 0.0001

EPN_A_IGb14_C2160.SSC

IGb14 epoch t0 Position (m) Velocity (m/y)
X Y Z VX VY VZ
120/2010 - 156/2021 001/2010 4319371.996 ± 0.001 1868687.871 ± 0.001 4292063.974 ± 0.001 -0.0174 ± 0.0001 0.0186 ± 0.0001 0.0082 ± 0.0001
232/1999 - 096/2010 001/2010 4319372.000 ± 0.001 1868687.873 ± 0.001 4292063.975 ± 0.001 -0.0174 ± 0.0001 0.0186 ± 0.0001 0.0082 ± 0.0001
160/1997 - 229/1999 001/2010 4319372.000 ± 0.001 1868687.870 ± 0.001 4292063.972 ± 0.001 -0.0174 ± 0.0001 0.0186 ± 0.0001 0.0082 ± 0.0001
plus_minus
PREVIOUS RELEASES

2. POSITIONS/VELOCITIES PUBLISHED BY THE IGS

LATEST RELEASE

IGb14.ssc (May 14, 2020) - more information

IGb14 epoch t0 Position (m) Velocity (m/y)
X Y Z VX VY VZ
120/2010 - 103/2020 001/2010 4319371.996 ± 0.000 1868687.869 ± 0.000 4292063.975 ± 0.000 -0.0171 ± 0.0000 0.0186 ± 0.0000 0.0085 ± 0.0000
232/1999 - 094/2010 001/2010 4319372.001 ± 0.000 1868687.874 ± 0.000 4292063.976 ± 0.000 -0.0171 ± 0.0000 0.0186 ± 0.0000 0.0085 ± 0.0000
160/1997 - 229/1999 001/2010 4319372.003 ± 0.000 1868687.872 ± 0.000 4292063.975 ± 0.000 -0.0171 ± 0.0000 0.0186 ± 0.0000 0.0085 ± 0.0000
plus_minus
PREVIOUS RELEASES

3. POSITIONS/VELOCITIES PUBLISHED BY THE IERS

LATEST RELEASE

ETRF2000-R14.SSC (October 4, 2016) - ITRF2014_GNSS.SSC.txt (January 21, 2016)

ETRF2000(R14) epoch t0 Position (m) Velocity (m/y)
X Y Z VX VY VZ
119/2010 - 365/2014 001/2010 4319372.428 ± 0.001 1868687.543 ± 0.001 4292063.714 ± 0.001 0.0008 ± 0.0000 0.0006 ± 0.0000 -0.0023 ± 0.0000
229/1999 - 119/2010 001/2010 4319372.429 ± 0.001 1868687.546 ± 0.001 4292063.712 ± 0.001 0.0008 ± 0.0000 0.0006 ± 0.0000 -0.0023 ± 0.0000
start - 229/1999 001/2010 4319372.430 ± 0.001 1868687.543 ± 0.001 4292063.713 ± 0.001 0.0008 ± 0.0000 0.0006 ± 0.0000 -0.0023 ± 0.0000
ITRF2014 epoch t0 Position (m) Velocity (m/y)
X Y Z VX VY VZ
119/2010 - 365/2014 001/2010 4319371.999 ± 0.001 1868687.871 ± 0.001 4292063.979 ± 0.001 -0.0172 ± 0.0000 0.0186 ± 0.0000 0.0087 ± 0.0000
229/1999 - 119/2010 001/2010 4319372.001 ± 0.001 1868687.873 ± 0.001 4292063.977 ± 0.001 -0.0172 ± 0.0000 0.0186 ± 0.0000 0.0087 ± 0.0000
start - 229/1999 001/2010 4319372.002 ± 0.001 1868687.871 ± 0.001 4292063.978 ± 0.001 -0.0172 ± 0.0000 0.0186 ± 0.0000 0.0087 ± 0.0000
plus_minus
PREVIOUS RELEASES

4. POSITION PUBLISHED WEEKLY IN THE EPN COMBINED SOLUTION

IGb14 epoch t0 Position (m) Velocity (m/y)
X Y Z VX VY VZ
248/2021 - 254/2021 251/2021 4319371.798 ± 0.000 1868688.091 ± 0.000 4292064.074 ± 0.000 NANANA

5. POSITIONS PUBLISHED BY THE COUNTRY

The official ETRS89 coordinates used in BGR are maintained by BAS / MGS. 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
001/2006- now 001/2005 4319372.426 1868687.540 4292063.726 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].