enum Planet {
	Mercury(0.330, 4879), Venus(4.87, 12104);

	private double mass;
	private int diameter;

	Planet(double mass, int diameter) {
		this.mass = mass;
		this.diameter = diameter;
	}

	@Override
	public String toString() {
		return super.toString() + ":" + mass + "," + diameter;
			
	}
}