What it’s like to stand here
Kepler-311 d
weight
≈ 1.16 g
sun
1.6× wider
sky
warm white

Illustration computed from this world’s measured and derived values, not a photograph.

Kepler-311 d

Kepler-311 d is a confirmed sub-Neptune exoplanet 2,540 ly from Earth in the constellation Lyra, discovered in 2023 by Kepler.

ESI 0.692,540 lyDiscovered in 2023 by Kepler

Transit: spotted by the tiny, repeating dip in its star’s light each time the planet crosses in front of it.

Kepler-311
host star
2.05 R⊕
radius
4.86 M⊕
mass · estimated from radius
232 days
orbital period
54°C (129°F)
avg temp
Human scale

Standing on Kepler-311 d, you would weigh roughly about 16% more than you do on Earth. Its yellow, Sun-like star looks 1.6× wider than ours, bathing the surface in warm white light. A year passes in just 232 days, and at an estimated 54°C (129°F) it is warm.

≈ 1.16 g
your weight (mass estimated from size)
232 days
one year, in Earth time
1.6× wider
how big its sun looks vs ours
warm white
midday sky tint
0.9×
how high you could jump vs Earth
normal
day/night cycle (not tidally locked)
Calculate your exact weight on Kepler-311 d
Earth Similarity Index0.69#160 of 5,788 ranked worlds

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
EARTH HEIGHT≈ 0.97xEARTH-RAISEDRAISED HERE
much like Earth height

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.

Assuming Earth-like air at this world's temperature of about 54°C (129°F), sound would travel roughly 7% faster than on Earth, so your voice would sound much as it does on Earth. The real atmosphere is unknown, so this is a best guess.

sound speed ≈ 363 m/s · 1.07× Earth · assumes Earth-like air

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.

The journey
Cosmic travel advisory
★★★★
Recommended, with reservations
  • !Persistently hot at around 54°C (129°F), well above anything you would call comfortable.
  • Surface gravity is close to Earth's, about 1.16 times, so you would move much as you do here.

A playful read of Kepler-311 d’s measured and computed values, not a real advisory.

How long to get there · 2,540 ly away
Jet airliner
3.0 billion years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
4.0 million years
dies en route1000-yr cryo: fails
Light speed
2,540 years
dies en route1000-yr cryo: fails
Warp 10
3 years
arrives, just older
Folding spacetimeinstant, plus 1 hr of paperwork
1 hour
arrives thriving
Size vs Earth
EarthKepler-311 d is 2.0× the width of Earth
Explore from here · roam the neighborhood

Zoom out: star → system → (soon) galaxy arm, host black hole, and a real image of the host galaxy.

Can you see it tonight? · observe
MID-SIZE TELESCOPE NEEDED
Host-star brightnessmag 13.9
ConstellationLyra
To see the host star8-10" (200-250 mm) telescope
Gear bridge

Matched telescope & eyepiece recommendations are coming. Any product links will carry a clear affiliate disclosure.

Common questions

What is the gravity on Kepler-311 d?

Kepler-311 d's surface gravity is about 1.2 times Earth's, estimated from its size.

How much would you weigh on Kepler-311 d?

Someone who weighs 150 pounds on Earth would weigh about 173 pounds on Kepler-311 d.

How far is Kepler-311 d from Earth?

Kepler-311 d lies about 2,540 light-years from Earth.

How long would it take to get to Kepler-311 d?

At the speed of NASA's Parker Solar Probe, the fastest craft ever built, the journey would take about 4.0 million years.

How hot is Kepler-311 d?

Kepler-311 d's equilibrium temperature, the balance it reaches from its star's light alone before any greenhouse warming, is about 54°C (129°F).

How long is a year on Kepler-311 d?

Kepler-311 d completes one orbit of its star in 232 days.

Illustration generated from Kepler-311 d's confirmed parameters, not a photograph.