Globe ellipsoids

Dear All!

I wonder whether it is possible to use a custom ellipsoid for the globe.

In Hungary we use the projection EPSG:23700 which is based on IUGG-67 ellipsoid (see, which is the same as GRS67, see

Is it possible to use somehow the Hungarian CRS or the IUGG-67 ellipsoid in Cesium?

If yes, how can I implement it?



Hello Gergely,

Yes, you can define your own ellipsoid and pass it to the Viewer. Here is a code example:

var ellipsoid = new Cesium.Ellipsoid(1, 1, 1);
var globe = new Cesium.Globe(ellipsoid);
var viewer = new Cesium.Viewer(‘cesiumContainer’, {
globe: globe


Most functions in Cesium either get the ellipsoid from the scene, or have a parameter to pass in your ellipsoid to override the default WGS84 ellipsoid.

Please let us know if you find any bugs! Your custom globe should be used by our code in most places, but since very few users use a custom globe, you might find some things we overlooked and we will be happy to try to fix it.