let a = 0.0;
let x=0;
let y=0;
let r=60;
function setup() {
createCanvas(500, 500);
colorMode(HSB,80,100,100);
//background(120);
}
function draw() {
a+=5;
noStroke();
fill(random(260),100,80);
r=random(60,150);
y=r*sin(radians(a))+250;
x=r*cos(radians(a))+250;
ellipse(x,y,10,10);
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/1.1.9/p5.min.js"></script>