Kerberos - Pluto’s Moon SHARE Facebook X WhatsApp Copy link 18 JAN 2025 Kerberos - Pluto’s moon. Credit: Grok Xai. Kerberos:Diameter: Approximately 13 km (8 miles)Orbit:Average Distance from Pluto: 58,200 km (36,200 miles)Orbital Period: 32.1 daysComposition: Likely composed of ice and rock.