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 MEDI00ITA (Medicina, ITA) as a class A station which means that it can used as fiducial station for EUREF densifications.

LATEST RELEASE

C2175 (December 15, 2021)

EPN_ETRF2000_C2175.SNX.Z

ETRF2000 epoch t0 Position (m) Velocity (m/y)
X Y Z VX VY VZ
291/2018 - 261/2021 001/2010 4461401.007 ± 0.000 919593.327 ± 0.000 4449504.542 ± 0.000 -0.0033 ± 0.0000 0.0006 ± 0.0000 -0.0002 ± 0.0000
248/2016 - 289/2018 001/2010 4461401.007 ± 0.000 919593.329 ± 0.000 4449504.542 ± 0.000 -0.0033 ± 0.0000 0.0006 ± 0.0000 -0.0002 ± 0.0000
094/2001 - 240/2016 001/2010 4461401.012 ± 0.000 919593.331 ± 0.000 4449504.544 ± 0.000 -0.0033 ± 0.0000 0.0006 ± 0.0000 -0.0002 ± 0.0000
173/1997 - 091/2001 001/2010 4461401.014 ± 0.000 919593.332 ± 0.000 4449504.548 ± 0.000 -0.0033 ± 0.0000 0.0006 ± 0.0000 -0.0002 ± 0.0000
007/1996 - 172/1997 001/2010 4461401.098 ± 0.004 919593.457 ± 0.001 4449504.486 ± 0.004 0.0032 ± 0.0003 0.0104 ± 0.0001 -0.0048 ± 0.0003

EPN_ETRF2014_C2175.SNX.Z

ETRF2014 epoch t0 Position (m) Velocity (m/y)
X Y Z VX VY VZ
291/2018 - 261/2021 001/2010 4461400.959 ± 0.000 919593.281 ± 0.000 4449504.589 ± 0.000 -0.0031 ± 0.0000 0.0008 ± 0.0000 0.0004 ± 0.0000
248/2016 - 289/2018 001/2010 4461400.960 ± 0.000 919593.283 ± 0.000 4449504.588 ± 0.000 -0.0031 ± 0.0000 0.0008 ± 0.0000 0.0004 ± 0.0000
094/2001 - 240/2016 001/2010 4461400.965 ± 0.000 919593.285 ± 0.000 4449504.590 ± 0.000 -0.0031 ± 0.0000 0.0008 ± 0.0000 0.0004 ± 0.0000
173/1997 - 091/2001 001/2010 4461400.966 ± 0.000 919593.286 ± 0.000 4449504.595 ± 0.000 -0.0031 ± 0.0000 0.0008 ± 0.0000 0.0004 ± 0.0000
007/1996 - 172/1997 001/2010 4461401.051 ± 0.004 919593.411 ± 0.001 4449504.532 ± 0.004 0.0034 ± 0.0003 0.0106 ± 0.0001 -0.0043 ± 0.0003

EPN_IGb14_C2175.SNX.Z

IGb14 epoch t0 Position (m) Velocity (m/y)
X Y Z VX VY VZ
291/2018 - 261/2021 001/2010 4461400.647 ± 0.000 919593.669 ± 0.000 4449504.822 ± 0.000 -0.0180 ± 0.0000 0.0193 ± 0.0000 0.0115 ± 0.0000
248/2016 - 289/2018 001/2010 4461400.647 ± 0.000 919593.672 ± 0.000 4449504.822 ± 0.000 -0.0180 ± 0.0000 0.0193 ± 0.0000 0.0115 ± 0.0000
094/2001 - 240/2016 001/2010 4461400.652 ± 0.000 919593.673 ± 0.000 4449504.824 ± 0.000 -0.0180 ± 0.0000 0.0193 ± 0.0000 0.0115 ± 0.0000
173/1997 - 091/2001 001/2010 4461400.654 ± 0.000 919593.674 ± 0.000 4449504.828 ± 0.000 -0.0180 ± 0.0000 0.0193 ± 0.0000 0.0115 ± 0.0000
007/1996 - 172/1997 001/2010 4461400.738 ± 0.004 919593.799 ± 0.001 4449504.766 ± 0.004 -0.0115 ± 0.0003 0.0291 ± 0.0001 0.0068 ± 0.0003
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
291/2018 - 102/2020 001/2010 4461400.649 ± 0.000 919593.671 ± 0.000 4449504.823 ± 0.000 -0.0181 ± 0.0000 0.0192 ± 0.0000 0.0115 ± 0.0000
246/2016 - 289/2018 001/2010 4461400.647 ± 0.000 919593.672 ± 0.000 4449504.822 ± 0.000 -0.0181 ± 0.0000 0.0192 ± 0.0000 0.0115 ± 0.0000
093/2001 - 244/2016 001/2010 4461400.651 ± 0.000 919593.673 ± 0.000 4449504.823 ± 0.000 -0.0181 ± 0.0000 0.0192 ± 0.0000 0.0115 ± 0.0000
173/1997 - 092/2001 001/2010 4461400.653 ± 0.000 919593.674 ± 0.000 4449504.827 ± 0.000 -0.0181 ± 0.0000 0.0192 ± 0.0000 0.0115 ± 0.0000
350/1995 - 174/1997 001/2010 4461400.734 ± 0.009 919593.792 ± 0.003 4449504.767 ± 0.008 -0.0119 ± 0.0006 0.0286 ± 0.0003 0.0069 ± 0.0006
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
093/2001 - 365/2014 001/2010 4461401.011 ± 0.001 919593.331 ± 0.001 4449504.543 ± 0.001 -0.0032 ± 0.0000 0.0007 ± 0.0000 -0.0002 ± 0.0000
173/1997 - 093/2001 001/2010 4461401.014 ± 0.001 919593.333 ± 0.001 4449504.548 ± 0.001 -0.0033 ± 0.0000 0.0007 ± 0.0000 -0.0002 ± 0.0000
start - 173/1997 001/2010 4461401.091 ± 0.004 919593.450 ± 0.002 4449504.490 ± 0.004 0.0026 ± 0.0003 0.0100 ± 0.0001 -0.0046 ± 0.0003
ITRF2014 epoch t0 Position (m) Velocity (m/y)
X Y Z VX VY VZ
093/2001 - 365/2014 001/2010 4461400.651 ± 0.001 919593.674 ± 0.001 4449504.823 ± 0.001 -0.0180 ± 0.0000 0.0194 ± 0.0000 0.0114 ± 0.0000
173/1997 - 093/2001 001/2010 4461400.653 ± 0.001 919593.675 ± 0.001 4449504.827 ± 0.001 -0.0180 ± 0.0000 0.0194 ± 0.0000 0.0114 ± 0.0000
start - 173/1997 001/2010 4461400.730 ± 0.004 919593.792 ± 0.002 4449504.770 ± 0.004 -0.0121 ± 0.0003 0.0287 ± 0.0001 0.0071 ± 0.0003
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
332/2021 - 338/2021 335/2021 4461400.436 ± 0.000 919593.899 ± 0.000 4449504.960 ± 0.000 NANANA

5. POSITIONS PUBLISHED BY THE COUNTRY

The official ETRS89 coordinates used in ITA are maintained by IGM. 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
unknown start - now 001/2008 4461401.022 919593.324 4449504.547 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].