let a=0;
let r=200;
let x=0;
let y=0;
function setup() {
createCanvas(600,600);
}
function draw() {
a+=2;
noStroke()
fill(random(67),random(567),random(222222));
r=random(10,200)
x=cos(radians(a))*r+300;
y=sin(radians(a))*r+300;
ellipse(x,y,200,200);
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/1.1.9/p5.min.js"></script>