[GRASSLIST:9853] cs2cs latlong to GB

[Francesco Mirabella]

Hi to all,
I need to project some lat-long points (international ellipsoid on
rome40 datum)(12.216667-43.550000) to Gauss-Boaga Projection (tmerc on international ellipsoid on rome40). I use:

 cs2cs -E +proj=latlong +ellps=intl +towgs84=-104.1,-49.1,-9.9,0.971,-2.917,0.714,-11.68 +to +proj=tmerc +lon_0=15 +k=0.9996 +x_0=2520000 +ellps=intl
 +towgs84=-104.1,-49.1,-9.9,0.971,-2.917,0.714,-11.68  -v -f %.6f

I have reprojected the values to GB with grass in order to test the result (the result shold be: 2291114.05710595  4825882.37746936 according to grass)


But I get wrong values, (2210149.818784 5838292.243164)

can someone help??

many thanks,

cheers
Francesco