how to draw trajectory of rocket for faux gravity in unity????

hey help me from 3 days i am searching on trajectory prediction for faux gravity but i found nothing , i am working on 2d space simulator game and i want to show the future position of the roket(want to show trajectory of rocket) with respect to the faux gravity of planet. this is code for gravity(need help for trajectory )

 void FixedUpdate () 
 
     {
         
         
         Vector3 v = planet.transform.position - Player.transform.position;
 
         float dist = v.magnitude;
         Vector3 gdirection = v.normalized;
         float G = Gconstant*(planet.transform.GetComponent<Rigidbody2D> ().mass * Player.transform.GetComponent<Rigidbody2D> ().mass) / (dist * dist);
 
 
         gravityVector = (gdirection * G);
         Player.transform.GetComponent<Rigidbody2D> ().AddForce (gravityVector, ForceMode2D.Impulse);
 
     }