- weight
- ≈ 1.24 g
- sky
- warm white
Illustration computed from this world’s measured and derived values, not a photograph.
K2-173 b
K2-173 b is a confirmed rocky exoplanet 746 ly from Earth in the constellation Taurus, discovered in 2018 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 K2-173 b, you would weigh roughly about 24% more than you do on Earth. Bathing the surface in warm white light. A year passes in just 5.9 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 1.24 times, so you would move much as you do here.
A playful read of K2-173 b’s measured and computed values, not a real advisory.
How long to get there · 746 ly away
No other confirmed planets here yet. New ones auto-appear as telescopes report.
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 K2-173 b?
K2-173 b's surface gravity is about 1.2 times Earth's, estimated from its size.
How much would you weigh on K2-173 b?
Someone who weighs 150 pounds on Earth would weigh about 187 pounds on K2-173 b.
How far is K2-173 b from Earth?
K2-173 b lies about 746 light-years from Earth.
How long would it take to get to K2-173 b?
At the speed of NASA's Parker Solar Probe, the fastest craft ever built, the journey would take about 1.2 million years.
How long is a year on K2-173 b?
K2-173 b completes one orbit of its star in 5.9 days.
Illustration generated from K2-173 b's confirmed parameters, not a photograph.