What's the coordinate system used in Honduras, along with it's Geoid model?
from this site, EPSG Geodetic Parameter Registry type Honduras in the area box, you should get a listing of unprojected and projected coordinate systems with datums, geographic transformations etc. There isn't just 1 that is used, so you may need to clarify
Like Dan said, there are quite a bit. The site he posted gives you quite a few systems you can use when you type in Honduras. If you click on the 'view' button next to each one, it gives you more details, like the ellipsoid model.
And if you want all the history of survey in Honduras, se Clifford Mugnier's Grids & Datums from ASPRS.
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