[OSRS-PROJ] FW: Datum shiffting problem

[Igor Alfirevic]

Hi there!


I have the following paramters(custom datum):

major semiaxis +a=6378388
Flattening     +es=0.00336700336700273

Shift          dX=-87
               dY=-98
               dZ=-121

and i try to convert lat/long coordinates to utm coordinates.

I was trying to convert with cs2cs program:

cs2cs +proj=latlong +datum=WGS84 +to +proj=utm +a=6378388
+es=0.00336700336700273 +zone=33 +towgs84=-87,-98,-121

and as input i use

13d57'10.9"E 46d05'55.3"N
and as result i received

419076.12   5107361.73

But i shuld receive:
419071      5105641

I read lat/lon coordinates on ellipsoid with same parameters:

major semiaxis +a=6378388
Flattening     +es=0.00336700336700273

Shift          dX=-87
               dY=-98
               dZ=-121


Could enyone help me please. I'm loosing my mind with this problem.
Thanks in advance!




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