The center of the sphere, measured in the object's local space.

	// Reset the center to the transform's position
	collider.center = Vector3.zero;

using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    void Example() {
        collider.center = Vector3.zero;
    }
}

import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	def Example() as void:
		collider.center = Vector3.zero