Libration rhymes with:
vibration, calibration, celebration, vibration, administration, arbitration, calibration, castration, celebration, concentration, conflagration, consecration, dehydration, demonstration, desecration, disintegration, duration, emigration, filtration, frustration, gyration, hydration, illustration, immigration, infiltration, integration, migration, ministration, narration, nitration, oration, orchestration, penetration, proration, prostration, registration, rehydration, sequestration, vibration
Libration sounds like:
lafortune, leaverton, lebreton, leverton, liberation, libertine, lipoprotein