how to set the camera position ?

CesiumJS
1

Whenever i started Cesium globe, it starts to showing the U.S. , but i want to see India at startup of my project.

I am using lookAt(eye, target, up) in this way

//Code to set camera position

var eye = new Cesium.Cartesian3(811968.1190451372, 858734.801874979, 821724.2805079403);

var target = eye.add(new Cesium.Cartesian3(100052.5028130862217908, 100025.52449297750082904, 100052.16880583840911567));

var up = new Cesium.Cartesian3(100000.5, 105000.5, 105000.5);

scene.getCamera().controller.lookAt(eye, target, up);

Please explain about the parameters for positioning the camera.