Collider inaccurate

Unity Engine
, ,
1

I’m trying to detect when a “needle” goes through a target that is placed on a virtual paper. But when the needle gets close but definitely not hit the actual target, the OnCollisionEnter is triggered.

    private Color targetColor;
    private Color targetOriginalColor;
    [SerializeField]
    private GameObject targetToChangeColor;
    void Start()
    {
        targetOriginalColor = targetToChangeColor.GetComponent<Renderer>().material.color;
    }

    void OnCollisionEnter(Collision collision)
    {
        targetColor = Color.green;
        targetToChangeColor.GetComponent<Renderer>().material.color = targetColor;
    }

    void OnCollisionExit(Collision collision)
    {
        targetColor = targetOriginalColor;
        targetToChangeColor.GetComponent<Renderer>().material.color = targetColor;
    }

In the image you can see that the collider is even smaller than the circle (target). But it gets triggered as if it was 4-5 times larger. Also, nothing other than my needle and targets have colliders on them.
I have no ideas why this happens. Any help would be appreciated.

7965807--1021314--collider.png

2

On the moving object use continues rigidbodies