- weight
- ≈ 1.23 g
- sky
- deep orange
Illustration computed from this world’s measured and derived values, not a photograph.
K2-343 b
K2-343 b is a confirmed rocky exoplanet 542 ly from Earth in the constellation Cancer, discovered in 2021 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 K2-343 b, you would weigh roughly about 23% more than you do on Earth. Bathing the surface in deep orange light. A year passes in just 2.8 days, and at an estimated 380°C (716°F) it is blistering.
How closely this world matches Earth in size and warmth, from 0 to 1 (Earth = 1.0). Computed by gravityfinder. See every world ranked →
What these mean: surface gravity · tidal locking · equilibrium temperature · Earth similarity
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 high and thin, almost cartoonish.
Assuming Earth-like air at this world's temperature of about 380°C (716°F), sound would travel roughly 51% faster than on Earth, so your voice would sound high and thin, almost cartoonish. The real atmosphere is unknown, so this is a best guess.
A real voice sample, pitch-shifted (tempo held constant) to suggest the acoustics: a playful approximation, not a precise simulation. Voice: Lingua Libre / Vealhurl, CC BY-SA 4.0.
- !Blistering at about 380°C (716°F), far too hot for liquid water on the surface.
- Surface gravity is close to Earth's, about 1.23 times, so you would move much as you do here.
A playful read of K2-343 b’s measured and computed values, not a real advisory.
How long to get there · 542 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 K2-343 b?
K2-343 b's surface gravity is about 1.2 times Earth's, estimated from its size.
How much would you weigh on K2-343 b?
Someone who weighs 150 pounds on Earth would weigh about 185 pounds on K2-343 b.
How far is K2-343 b from Earth?
K2-343 b lies about 542 light-years from Earth.
How long would it take to get to K2-343 b?
At the speed of NASA's Parker Solar Probe, the fastest craft ever built, the journey would take about 845,262 years.
How hot is K2-343 b?
K2-343 b's equilibrium temperature, the balance it reaches from its star's light alone before any greenhouse warming, is about 380°C (716°F).
How long is a year on K2-343 b?
K2-343 b completes one orbit of its star in 2.8 days.
Illustration generated from K2-343 b's confirmed parameters, not a photograph.