AnsweredAssumed Answered

Transformation parameters for NAD_1983_To_WGS_1984_5 - wrong sign?

Question asked by fbiles on Jul 5, 2013
Latest reply on Jul 9, 2013 by fbiles
Does anyone know why the transformation parameters for NAD_1983_To_WGS_1984_5 are opposite in sign to what is published in  Transforming Positions and Velocities between the International Terrestrial Reference Frame of 2000 and North American Datum of 1983 by Soler and Snay and on the NGS website (

In ArcMap v 10.0 SP4, this is what I see in the Geographic coordinate System Transformations window:


The signs are opposite of what is published.  I looked up the parameters for other transformations, such as WGS_1984_(ITRF08)_To_NAD_1983_2011, and they match the published values.

Thanks for any insights.