Orbital Periods of Saturn's Moon Janus Converted to Musical Notes (image) University of Toronto Share Print E-Mail Caption The orbital periods of the six 1st order resonances of Janus that affect the ring system. The 1:1 resonance is with Janus' co-orbital moon Epimetheus. The corresponding frequencies of these resonances were scaled up by 23 octaves by astrophysicists at the University of Toronto, producing a musical scale. Credit Credit: SYSTEM Sounds/NASA/JPL/Space Science Institute Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.