Your weight on Enceladus
A person who weighs 150 pounds on Earth weighs about 1.7 pounds on Enceladus, because Enceladus's surface gravity is 0.012 g. A person who weighs 70 kilograms on Earth weighs about 0.8 kilograms on Enceladus.
Illustration computed from Enceladus's measured and derived values, not a photograph.
What it’s like to stand here
Why your weight changes here
Enceladus is a small, icy moon of Saturn about 500 kilometres across, and its gravity is barely there: about 1.2% of Earth's, so a person who weighs 150 pounds at home would weigh under 2 pounds. In g = GM/r², Enceladus has about 0.002% of Earth's mass. Its small radius brings you close to its centre, but there is too little mass for that to matter much. The speed needed to escape it entirely is only about 240 metres per second, low enough that some of the water its south-pole geysers spray out escapes and feeds Saturn's faint E ring. Your mass would not change; the pull on it would almost vanish. Saturn's gravity does not add to your weight, because Enceladus and everything on it fall around Saturn together.
Your weight on every world in the solar system
Every body gravityfinder carries, with its gravity relative to Earth’s and what you would weigh there. Type your weight in the calculator above and the table follows it. The four giants have no surface, so theirs is the pull at the cloud tops.
| World | Type | Gravity | Weight (lb) | Weight (kg) |
|---|---|---|---|---|
| Mercury | planet | 0.38× | 56.5 | 25.6 |
| Venus | planet | 0.90× | 136 | 61.6 |
| Earth | planet | 1.00× | 150 | 68 |
| Mars | planet | 0.38× | 56.7 | 25.7 |
| Jupitercloud tops | planet | 2.53× | 379 | 172 |
| Saturncloud tops | planet | 1.07× | 160 | 72.5 |
| Uranuscloud tops | planet | 0.90× | 136 | 61.5 |
| Neptunecloud tops | planet | 1.14× | 171 | 77.5 |
| Ceres | dwarf planet | 0.029× | 4.4 | 2 |
| Pluto | dwarf planet | 0.063× | 9.4 | 4.3 |
| The Moon | moon of Earth | 0.17× | 24.8 | 11.2 |
| Io | moon of Jupiter | 0.18× | 27.5 | 12.5 |
| Europa | moon of Jupiter | 0.13× | 20.1 | 9.1 |
| Ganymede | moon of Jupiter | 0.15× | 21.8 | 9.9 |
| Callisto | moon of Jupiter | 0.13× | 18.9 | 8.6 |
| Titan | moon of Saturn | 0.14× | 20.7 | 9.4 |
| Enceladus | moon of Saturn | 0.012× | 1.7 | 0.8 |
| Triton | moon of Neptune | 0.079× | 11.9 | 5.4 |
| Charon | moon of Pluto | 0.029× | 4.4 | 2 |
Worked example: the formula with Enceladus's numbers
Surface gravity comes from Newton’s law of gravitation: g = G × M ÷ r², where G is the gravitational constant, M the body’s mass and r the distance from its centre to where you stand.
- G = 6.674 × 10⁻¹¹ m³ kg⁻¹ s⁻²
- M = 1.08 × 10²⁰ kg (Enceladus's mass)
- r = 252 km = 2.52 × 10⁵ m (mean radius)
- g = 6.674 × 10⁻¹¹ × 1.08 × 10²⁰ ÷ (2.52 × 10⁵)² = 0.114 m/s²
Earth, through the same formula, gives 9.82 m/s². So Enceladus pulls 0.114 ÷ 9.82 = 0.0116 times as hard as Earth.
Your weight on Enceladus is your Earth weight times that ratio: 150 lb × 0.0116 = 1.7 lb, or about 1.7 pounds.
The exoplanets closest to Enceladus's gravity
No exoplanet gravityfinder states a gravity for comes within 10% of Enceladus's 0.012 g; these are the nearest. Each has a mass and size good enough for gravityfinder to state its surface gravity.
More about being on Enceladus
If your children grew up herea playful thought experiment
Barely any weight to fight, at 0.01 times Earth's gravity. A child who grew up here could grow remarkably tall and willowy, about 2.2x taller than on Earth: a 5 ft 10 in adult could stand nearer 12 ft 10 in, with long thin limbs and delicate bones that never had to bear much load.
- Bones
- Light and slender
- With little weight to carry, the growing skeleton lays down far less bone, the way astronauts' bones thin in months of low gravity.
- Heart
- Unhurried
- With less weight pulling blood down toward the feet, the heart has far less work to do.
- Movement
- Bounding and springy
- So little weight means each step would carry the body up and forward in long, floating strides.
A playful thought experiment from this world’s gravity, not a prediction about any real person. No human has ever grown up off Earth, so no one truly knows; the direction (taller in low gravity, shorter and stockier in high) follows how growing bodies respond to weight.
Hear how a voice sounds herea computed acoustic demoEXPERIMENTAL · just for fun
You would hear nothing at all.
With essentially no atmosphere, there is no medium to carry sound. You could shout into someone's helmet from an inch away and they would hear nothing: space is silent.
How long to get there with today’s craftCALCULATED
At the speed of the Parker Solar Probe, the fastest craft ever built, the trip to Enceladus would take about 77 days; a real mission took the Cassini probe almost 7 years to reach Saturn's neighborhood.
See Enceladus's full page for its orbit, size, sky and how to see it.
Common questions
How much would I weigh on Enceladus?
A person who weighs 150 pounds on Earth weighs about 1.7 pounds on Enceladus, because Enceladus's surface gravity is 0.012 g. A person who weighs 70 kilograms on Earth weighs about 0.8 kilograms on Enceladus.
What is the gravity on Enceladus?
Enceladus's surface gravity is about 0.114 m/s², 0.0116 times Earth's (0.012 g). gravityfinder computes it from Enceladus's mass and radius with g = GM/r².
What is the difference between mass and weight?
Mass is the amount of matter in you, and it is the same everywhere. Weight is the force gravity exerts on that mass. On Enceladus your mass would be unchanged, but a scale would read 0.0116 times what it reads on Earth, because gravity there is weaker.
How high could I jump on Enceladus?
About 86.5 times as high as on Earth, because the same push from your legs works against 0.0116 times the gravity. A 50 centimetre standing jump on Earth would carry you about 43 metres on Enceladus, and you would stay in the air about 86.5 times as long.
Where in the solar system would you weigh the most and the least?
Of the worlds with ground to stand on, you would weigh the most on Earth (1.00 g) and the least on Enceladus (0.012 g), where a person who weighs 150 pounds on Earth would weigh about 1.7 pounds. The strongest pull of all is at Jupiter's cloud tops, 2.53 g, but there is nothing there to stand on.
Which exoplanets have gravity like Enceladus's?
Of the exoplanets gravityfinder states a surface gravity for, Kepler-33 c (0.038 g), Kepler-80 g (0.051 g), Kepler-138 b (0.17 g) and K2-138 f (0.19 g) come closest to Enceladus's 0.012 g. None is within 10%, so read these as the nearest, not a match.
Could you jump off Enceladus into space?
No. Escaping Enceladus takes about 240 metres per second, and the best human jump leaves the ground at a few metres per second. You would rise far higher than on Earth and drift down slowly, but you would come back.
How do I calculate my weight on Enceladus?
Multiply your Earth weight by 0.0116, Enceladus's gravity relative to Earth's. For 150 pounds that is 150 × 0.0116 = about 1.7 pounds. The 0.0116 comes from g = GM/r² with Enceladus's mass and radius, divided by the same calculation for Earth.
Gravity computed by gravityfinder from Enceladus's mass and radius in the NASA planetary fact sheets (gravity = mass ÷ radius², with Earth = 1). Measured mass.