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Entering orbit…
Habitability
0/ 100
Uninhabitable
HD 134606 e rendered in TerraForge from its measured mass, orbit and star

HD 134606 e

Also written HD 134606e

Lava World87 light years awayFound 2024
Mass
2.34 × Earth
Radius
1.33 × Earth
Gravity
1.32 g
Surface (est.)
1,271 K
Year
4.3 days
From Earth
87.4 ly
Mass
2.34 × Earth
Radius
1.33 × Earth
Gravity
1.32 g
Surface (est.)
1,271 K
Year
4.3 days
From Earth
87.4 ly

HD 134606 system

Type
G-type (Yellow (Sun-like))
Spectral type
G5IV
Temperature
5,576 K
Radius
1.16 ☉
Mass
1.05 ☉
Planets
5
Luminosity
1.16 ☉

Published by the NASA Exoplanet Archive. This world’s temperature and habitability score are computed from this star’s measured luminosity, not from a stand-in for its class.

HD 134606 e0.053 AUYou are here2.3 M⊕
HD 134606 b0.10 AU9.1 M⊕
HD 134606 f0.18 AU5.6 M⊕
HD 134606 c0.30 AU11 M⊕
HD 134606 d1.94 AU45 M⊕
Habitable zone

Star and planets drawn to scale: the star is 95 times as wide as HD 134606 e, so only its edge is in view. Orbits spaced as in the star system view.

Estimated: this planet doesn't transit its star, so its size is inferred, not measured

HD 134606 e, from the NASA Exoplanet Archive (found 2024). Measured: 2.34 Earth masses, 0.0527 AU, a 5576 K G-type star. Composition inferred from an estimated bulk density of 0.99x Earth's, modeled rather than measured since this isn't a transiting planet — the radius is the archive's estimate, so it can't settle how much water there is; read as rock and iron, with a day locked to its 4.3-day year, as anything orbiting this close would be.

Surface. Molten surface with lava flows, volcanic activity everywhere

Lava World
Life unlikely — too hot for liquid waterExtreme Activity
HD 134606 e's proximity to its star (0.05 AU) results in extreme surface temperatures of 1271K.
Lava worlds orbit so close to their stars that rocky surfaces melt into oceans of molten rock. Recent planet formation can also create temporary lava worlds.
Classification Criteria:
✓ Temperature: 1271K (>1000K)

Reading HD 134606 e’s atmosphere

Dominant elements: O, Si, Fe, N, C, HThis is what a telescope would measure while HD 134606 e crosses in front of its star: starlight passes through the atmosphere and spreads into a rainbow band. Each dark line marks a wavelength the atmosphere absorbed.Every element absorbs its own signature wavelengths — hydrogen always darkens the same two spots, calcium another pair, and so on. Astronomers match the lines in a real spectrum against a library of these signatures to say what an atmosphere is made of, light-years away, without ever visiting. A deeper line generally means more of that element is present.HD 134606 e sits about 87 light-years away, found by the radial velocity method. Most catalogued distances trace back to parallax: as Earth orbits the Sun, a nearby star appears to shift very slightly against the distant background stars, and the size of that shift gives its distance directly.
Further reading
ExoplanetsSara Seager (editor)The field's standard reference: how planets are found, how they form, and what their atmospheres are made of.The Planet FactoryElizabeth TaskerHow planets are made, and why so few of them come out like Earth.Exoplanets: Diamond Worlds, Super Earths, Pulsar PlanetsMichael Summers & James TrefilThe strange end of the catalogue — carbon worlds, molten rock, planets orbiting dead stars.Imagined LifeJames Trefil & Michael SummersWhat could live on a world like this one: ice shells, supergravity, tidally locked twilight.
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Habitability ScoreUninhabitable
0
Contributing Factors
temperature0
Inferno world - temperatures exceed all possibility of life
atmosphere40

Vaporized rock and metals

Atmosphere present but composition not ideal for life
water8
Limited water content - boiling away, little would be retained
magnetic Field30
No magnetic field - vulnerable to solar radiation
geology40
Extreme volcanic activity may be hazardous
Organic Chemistry80
Core organic elements (CHNO) present
rotation30
Very slow rotation - days and nights each last several Earth days, bringing extreme temperature swings

Physical Properties

Mass
2.34x Earth (1.40e+25 kg)
Radius
1.33x Earth (8,458 km)
This planet: 1.33× Earth radiusEarth: 1× (baseline)
Surface Gravity
1.33x Earth (13.0 m/s²)
Surface Temperature
1,271 K (998 °C / 1,829 °F)
Rotation Period
103.7 hours/day (slower than Earth)
This planet: 104 h/dayEarth: 24 h/day

Time Dilation

Clocks run 8.9 seconds per year slower than deep space — about 12 minutes over a lifetime

Elemental Composition

A dark ringed planet hanging over the horizon of a rocky moon, its rings lit by a distant sun

New: Stand on Your Moons 🌒

A planet's surface view isn't the only ground any more. Press the surface button on a planet with moons and it asks where to stand: the planet itself, or any moon still in orbit, each tagged with what it became — ocean, ice, carbon, volcanic. Every moon gets its own ground and sky from its own physics: airless rock under a black sky, ice cracked by geysers over a hidden sea, sulfur plains shaking with eruptions, or orange haze you can't see the sun through. And hanging over the horizon, there's the planet you built.

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