How can I make smooth steps around an object?

How can I make smooth steps around a object that are the same distances apart no matter how far you are from that object?

My current code works but isn't smooth and isn't perfectly circling (although I like that).

 using UnityEngine;
 using System.Collections;
 
 public class Move1 : MonoBehaviour {
 
     private Vector3 Player2Pos = new Vector3(0,0,0);
     private Vector3 sStep = new Vector3(1,0,0);
      
     // Update is called once per frame
     void Update () {
         Player2Pos = GameObject.FindGameObjectWithTag("Player2").transform.position;
 
 
         if (Input.GetKeyDown(KeyCode.DownArrow)){
 
             transform.LookAt(Player2Pos);
             transform.Translate (sStep*-1);
         }
     }
 }