SOURCE

let a = 0.0;
let x=0;
let y=0;
let r=60;
let t=0;
let c=0;
function setup() {
createCanvas(500, 500);
colorMode(HSB,80,100,100);
background(120);
}
function draw() {
  a+=5;
  t=1;
  if(t>360){
      t=0;
  }
noStroke();
fill(t,40,10);
r=noise(c); 
r=map(r,0,2,50,250);
c+=0.002;
y=r*sin(radians(a))+250;
x=r*cos(radians(a))+250;
ellipse(x,y,100,10);
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/1.1.9/p5.min.js"></script>