- weight
- 0.58 g
- sun
- 3.0× wider
- sky
- warm white
Illustration computed from this world’s measured and derived values, not a photograph.
Kepler-289 d
Kepler-289 d is a confirmed sub-Neptune exoplanet 2,298 ly from Earth in the constellation Cygnus, discovered in 2014 by Kepler.
Transit: spotted by the tiny, repeating dip in its star’s light each time the planet crosses in front of it.
Standing on Kepler-289 d, you would weigh about 42% less than you do on Earth. Its yellow, Sun-like star looks 3.0× wider than ours, bathing the surface in warm white light. A year passes in just 66 days, and at an estimated 230°C (445°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
Lighter than home, at 0.58 times Earth's gravity. A child raised here would likely grow taller and more slender than their Earth-raised parents, about 1.1x taller than on Earth: a 5 ft 10 in adult could stand nearer 6 ft 6 in.
- 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.
- 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 demo
Your voice would sound high and thin, almost cartoonish.
Assuming Earth-like air at this world's temperature of about 230°C (445°F), sound would travel roughly 32% 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 230°C (445°F), far too hot for liquid water on the surface.
- !Low gravity, 0.58 times Earth's, would hold only a thin, unbreathable atmosphere at best.
A playful read of Kepler-289 d’s measured and computed values, not a real advisory.
How long to get there · 2,298 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 Kepler-289 d?
Kepler-289 d's surface gravity is about 0.58 times Earth's.
How much would you weigh on Kepler-289 d?
Someone who weighs 150 pounds on Earth would weigh about 87 pounds on Kepler-289 d.
How far is Kepler-289 d from Earth?
Kepler-289 d lies about 2,298 light-years from Earth.
How long would it take to get to Kepler-289 d?
At the speed of NASA's Parker Solar Probe, the fastest craft ever built, the journey would take about 3.6 million years.
How hot is Kepler-289 d?
Kepler-289 d's equilibrium temperature, the balance it reaches from its star's light alone before any greenhouse warming, is about 230°C (445°F).
How long is a year on Kepler-289 d?
Kepler-289 d completes one orbit of its star in 66 days.
Illustration generated from Kepler-289 d's confirmed parameters, not a photograph.