Escape Velocity of Saturn
| Value | 35,500 m/s |
| Status | Conventional / typical value |
| Source | NASA NSSDC Planetary Fact Sheet, Saturn (escape velocity) |
| Categories | Astronomicalsolar-systemplanets |
| millimeter per year | 1.1202948e+15 mm/yr |
| millimeter per hour | 127,800,000,000 mm/h |
| foot per day | 10,062,992,000 ft/d |
| inch per hour | 5,031,496,100 in/h |
| meter per day | 3,067,200,000 m/d |
| millimeter per minute | 2,130,000,000 mm/min |
| meter per hour | 127,800,000 m/h |
| inch per minute | 83,858,268 in/min |
| millimeter per second | 35,500,000 mm/s |
| foot per minute | 6,988,189 ft/min |
| centimeter per second | 3,550,000 cm/s |
| meter per minute | 2,130,000 m/min |
| inch per second | 1,397,637.8 in/s |
| kilometer per hour | 127,800 km/h |
| foot per second | 116,469.82 ft/s |
| mile per hour | 79,411.238 mph |
| knot | 69,006.479 kn |
| meter per second | 35,500 m/s |
| mach (sea level) | 104.32156 Ma |
| kilometer per second | 35.5 km/s |
| speed of light | 0.00011841525 c |
Learning zone
Like Jupiter, Saturn clears the retention threshold for every gas: 35.5 km/s keeps even the primordial hydrogen and helium bound for the age of the solar system, preserving nebular composition. The number is best known in reverse. When Cassini exhausted its fuel in 2017, planetary-protection rules for the ocean moons Enceladus and Titan required disposing of the spacecraft, and the chosen grave was the planet itself: Cassini crossed the one-bar level at over 34 km/s, its final signal cut off as the atmosphere tore it apart — the Grand Finale.
The well is also a ladder. Titan, orbiting deep inside it, lends its own orbital energy freely: nearly every one of Cassini's 294 orbits was reshaped by a Titan flyby, a gravitational gearbox that let thirteen years of touring run on centimetres per second of thruster fuel.