- weight
- 5.20 g
- sun
- 13.1× wider
- sky
- amber-orange
Illustration computed from this world’s measured and derived values, not a photograph.
Kepler-102 b
Kepler-102 b is a confirmed rocky exoplanet 352 ly from Earth in the constellation Lyra, 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-102 b, you would weigh about 420% more than you do on Earth. Its orange dwarf looks 13.1× wider than ours, bathing the surface in amber-orange 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 5.3 days, and at an estimated 584°C (1083°F) it is furnace-hot.
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
Beyond about four times Earth's gravity, a growing child's skeleton could not carry its own weight. A human body simply could not develop here, even sheltered indoors. The shape below is only where the trend points before biology gives out: short, and impossibly dense.
- Bones
- Thick and dense
- More weight to bear forces the skeleton to grow denser and stronger all through childhood.
- Heart
- Large and powerful
- Pushing blood upward against stronger gravity demands a bigger, harder-working heart.
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 584°C (1083°F), sound would travel roughly 73% 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.
- !Furnace-hot at around 584°C (1083°F), with no liquid water and no shade anywhere.
- !Gravity is 5.2 times Earth's, near the limit at which a person can stand or walk at all.
- !Its star delivers about 90 times the sunlight Earth gets, a blinding, sterilizing glare.
- !Earth-similarity index 0.19: this world has almost nothing in common with our own.
- !Likely tidally locked: one hemisphere in endless day, the other in permanent night.
A playful read of Kepler-102 b’s measured and computed values, not a real advisory.
How long to get there · 352 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-102 b?
Kepler-102 b's surface gravity is about 5.2 times Earth's.
How much would you weigh on Kepler-102 b?
Someone who weighs 150 pounds on Earth would weigh about 780 pounds on Kepler-102 b.
How far is Kepler-102 b from Earth?
Kepler-102 b lies about 352 light-years from Earth.
How long would it take to get to Kepler-102 b?
At the speed of NASA's Parker Solar Probe, the fastest craft ever built, the journey would take about 548,332 years.
How hot is Kepler-102 b?
Kepler-102 b's equilibrium temperature, the balance it reaches from its star's light alone before any greenhouse warming, is about 584°C (1083°F).
How long is a year on Kepler-102 b?
Kepler-102 b completes one orbit of its star in 5.3 days.
Illustration generated from Kepler-102 b's confirmed parameters, not a photograph.