What it’s like to stand here
Kepler-507 b
sun
27.5× wider
sky
bright white

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

Rocky world

Kepler-507 b

Kepler-507 b is a confirmed rocky exoplanet 1,277 ly from Earth in the constellation Cygnus, discovered in 2016 by Kepler.

ESI 0.151,277 lyDiscovered in 2016 by Kepler

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

Kepler-507 →
host star
1.30 R⊕
radius
5.70 M⊕
mass · minimum (m·sin i)
3.6 days
orbital period
1134°C (2073°F)
avg temp
Human scale

Its yellow-white star looks 27.5× wider than ours, bathing the surface in bright white 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 3.6 days, and at an estimated 1134°C (2073°F) it is hot enough to melt rock.

–
your weight, not stated
EXCLUDED
3.6 days
one year, in Earth time
CALCULATED
27.5× wider
how big its sun looks vs ours
bright white
midday sky tint
–
jump, needs gravity
likely
likely tidally locked: probably eternal day on one side, night on the other

Catalog values (NASA Exoplanet Archive): mass 5.70 M⊕, radius 1.30 R⊕. Its catalog mass and radius imply a density of 14.3 g/cm³, denser than compressed iron, so they cannot both be right, and gravityfinder does not use Kepler-507 b in gravity rankings or weight calculations.

Earth Similarity Index0.15CALCULATED#4,643 of 5,873 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

Hear how a voice sounds herea computed acoustic demoEXPERIMENTAL · just for fun

Your voice would sound high and thin, almost cartoonish.

Assuming Earth-like air at this world's temperature of about 1134°C (2073°F), sound would travel roughly 121% 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.

sound speed ≈ 752 m/s · 2.21× 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
★☆☆☆☆
Do not travel
  • !At about 1134°C (2073°F), the daytime side glows: metals run liquid and any atmosphere is being torn away.
  • !Its star delivers about 877 times the sunlight Earth gets, a blinding, sterilizing glare.
  • !Earth-similarity index 0.15: 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-507 b’s measured and computed values, not a real advisory.

How long to get there · 1,277 ly awayCALCULATED
Jet airliner
1.5 billion years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
2.0 million years
dies en route1000-yr cryo: fails
Light speed
1,277 years
dies en route1000-yr cryo: fails
Warp 10
1 year
arrives, just older
Folding spacetimeinstant, plus 1 hr of paperwork
1 hour
arrives thriving
Size vs Earth
EarthKepler-507 b is 1.3× 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
SMALL TELESCOPE NEEDED
Host-star brightnessmag 12.2
ConstellationCygnus →
To see the host star4-6" (100-150 mm) telescope
Gear bridge

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

Common questions

How far is Kepler-507 b from Earth?

Kepler-507 b lies about 1,277 light-years from Earth.

How long would it take to get to Kepler-507 b?

At the speed of NASA's Parker Solar Probe, the fastest craft ever built, the journey would take about 2.0 million years.

How hot is Kepler-507 b?

Kepler-507 b's equilibrium temperature, the balance it reaches from its star's light alone before any greenhouse warming, is about 1134°C (2073°F).

How long is a year on Kepler-507 b?

Kepler-507 b completes one orbit of its star in 3.6 days.

Illustration generated from Kepler-507 b's confirmed parameters, not a photograph.