- weight
- 1.18 g
- sun
- 8.0× wider
- sky
- dim red
Illustration computed from this world’s measured and derived values, not a photograph.
LHS 1140 c
LHS 1140 c is a confirmed rocky exoplanet 48.9 ly from Earth in the constellation Cetus, discovered in 2018 by Multiple Observatories.
Transit: spotted by the tiny, repeating dip in its star’s light each time the planet crosses in front of it.
Standing on LHS 1140 c, you would weigh about 18% more than you do on Earth. Its red dwarf looks 8.0× wider than ours, bathing the surface in dim red light. It is likely tidally locked, so that sun never moves in the sky: one hemisphere in endless day, the other in permanent night. A year passes in just 3.8 days, and at an estimated 149°C (300°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 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 noticeably higher and reedier.
Assuming Earth-like air at this world's temperature of about 149°C (300°F), sound would travel roughly 21% faster than on Earth, so your voice would sound noticeably higher and reedier. 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.
- !Persistently hot at around 149°C (300°F), well above anything you would call comfortable.
- Surface gravity is close to Earth's, 1.18 times, so you would move much as you do here.
- !Likely tidally locked: one hemisphere in endless day, the other in permanent night.
A playful read of LHS 1140 c’s measured and computed values, not a real advisory.
How long to get there · 48.9 ly away
Zoom out: star → system → (soon) galaxy arm, host black hole, and a real image of the host galaxy.
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What is the gravity on LHS 1140 c?
LHS 1140 c's surface gravity is about 1.2 times Earth's.
How much would you weigh on LHS 1140 c?
Someone who weighs 150 pounds on Earth would weigh about 177 pounds on LHS 1140 c.
How far is LHS 1140 c from Earth?
LHS 1140 c lies about 48.9 light-years from Earth.
How long would it take to get to LHS 1140 c?
At the speed of NASA's Parker Solar Probe, the fastest craft ever built, the journey would take about 76,231 years.
How hot is LHS 1140 c?
LHS 1140 c's equilibrium temperature, the balance it reaches from its star's light alone before any greenhouse warming, is about 149°C (300°F).
How long is a year on LHS 1140 c?
LHS 1140 c completes one orbit of its star in 3.8 days.
Illustration generated from LHS 1140 c's confirmed parameters, not a photograph.