- weight
- ≈ 1.17 g
- sky
- amber-orange
Illustration computed from this world’s measured and derived values, not a photograph.
K2-381 c
K2-381 c is a confirmed sub-Neptune exoplanet 475 ly from Earth in the constellation Sagittarius, discovered in 2022 by K2.
Transit: spotted by the tiny, repeating dip in its star’s light each time the planet crosses in front of it.
Standing on K2-381 c, you would weigh roughly about 17% more than you do on Earth. Bathing the surface in amber-orange light. A year passes in just 16 days.
What these mean: surface gravity · tidal locking · equilibrium temperature
If your children grew up herea playful thought experiment
Gravity close to Earth's, at about 1.2 times. A child would grow up much as they would back home.
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 demo
Your voice would sound much as it does on Earth.
We do not yet have a temperature for this world, and its atmosphere is unknown, so its acoustics cannot be modelled. In Earth-like air a human voice carries as you know it, and without the temperature that is as far as the physics will take us.
- Surface gravity is close to Earth's, about 1.17 times, so you would move much as you do here.
A playful read of K2-381 c’s measured and computed values, not a real advisory.
How long to get there · 475 ly away
Zoom out: star → system → (soon) galaxy arm, host black hole, and a real image of the host galaxy.
Matched telescope & eyepiece recommendations are coming. Any product links will carry a clear affiliate disclosure.
What is the gravity on K2-381 c?
K2-381 c's surface gravity is about 1.2 times Earth's, estimated from its size.
How much would you weigh on K2-381 c?
Someone who weighs 150 pounds on Earth would weigh about 175 pounds on K2-381 c.
How far is K2-381 c from Earth?
K2-381 c lies about 475 light-years from Earth.
How long would it take to get to K2-381 c?
At the speed of NASA's Parker Solar Probe, the fastest craft ever built, the journey would take about 741,146 years.
How long is a year on K2-381 c?
K2-381 c completes one orbit of its star in 16 days.
Illustration generated from K2-381 c's confirmed parameters, not a photograph.