Place Sprites on a Circle and Rotate

class Example extends Phaser.Scene
{
    constructor ()
    {
        super();
    }

    preload ()
    {
        this.load.setBaseURL('https://cdn.phaserfiles.com/v410');
        this.load.spritesheet('balls', 'assets/sprites/balls.png', { frameWidth: 17, frameHeight: 17 });
    }

    create ()
    {
        const circle = new Phaser.Geom.Circle(400, 300, 220);

        this.group = this.add.group({ key: 'balls', frame: [0, 1, 5], repeat: 10 });

        Phaser.Actions.PlaceOnCircle(this.group.getChildren(), circle);

        this.tween = this.tweens.addCounter({
            from: 220,
            to: 100,
            duration: 3000,
            delay: 2000,
            ease: 'Sine.easeInOut',
            repeat: -1,
            yoyo: true
        });
    }

    update ()
    {
        Phaser.Actions.RotateAroundDistance(this.group.getChildren(), { x: 400, y: 300 }, 0.02, this.tween.getValue());
    }
}

const config = {
    scale: { mode: Phaser.Scale.FIT },
    type: Phaser.AUTO,
    width: 800,
    height: 600,
    backgroundColor: '#2d2d2d',
    parent: 'game-container',
    scene: Example
};

const game = new Phaser.Game(config);