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Entering orbit…
Habitability
0/ 100
Uninhabitable

Kepler-326 d

Rocky TerrestrialUninhabitable1591 light years awayFound 2014

Kepler-326 d, from the NASA Exoplanet Archive (found 2014). Measured: 6.9 Earth masses, 0.066 AU, a 5105 K K-type star. Composition inferred from a measured bulk density of 3.89x Earth's, far too high for silicates alone — an iron-rich world, with a day locked to its 6.8-day year, as anything orbiting this close would be. Note: TerraForge comes out at 989 K against the archive's 781 K, because it models stars by spectral class, and Kepler-326 is not an average K-type.

Host star

Kepler-326

Type
K-type (Orange)
Temperature
5,105 K
Radius
0.801 ☉
Mass
0.91 ☉
Known planets
3, including this one
Luminosity
0.697 ☉

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.

Rocky Terrestrial

Extreme Activity
Why is this a Rocky Terrestrial?Your planet is dominated by silicate (36.6%) and iron (24.4%) content, forming a rocky terrestrial body.
Rocky terrestrial planets are primarily composed of silicate rocks and metals. They're the most common type of small planet in the universe.
Classification Criteria:
✓ Silicon: 36.6% + Iron: 24.4% + Magnesium: 12.2%✓ Mass: 6.9x Earth (terrestrial range)
Further reading
The Little Book of ExoplanetsJoshua WinnHow these worlds are found, and what a measurement can honestly tell us.Exoplanets: Diamond Worlds, Super Earths, Pulsar PlanetsMichael Summers & James TrefilThe strange end of the catalogue — carbon worlds, molten rock, planets orbiting dead stars.Envisioning ExoplanetsMichael CarrollWhat these worlds might look like from the ground, painted from the same measurements this page renders.Imagined LifeJames Trefil & Michael SummersWhat could live on a world like this one: ice shells, supergravity, tidally locked twilight.
As an Amazon Associate I earn from qualifying purchases — if you buy through these links, TerraForge may receive a small commission at no extra cost to you.
Habitability ScoreUninhabitable
0
Contributing Factors
temperature5
Scorching - hot enough to melt lead, though rock stays solid; no chance for life
atmosphere10
No atmosphere - exposed to radiation and temperature extremes
water0
No water - the recipe has no hydrogen and oxygen to form it
magnetic Field30
No magnetic field - vulnerable to solar radiation
geology40
Extreme volcanic activity may be hazardous
Organic Chemistry20
Limited organic chemistry potential
rotation30
Very slow rotation - extreme temperature swings between eternal day and night sides

Physical Properties

Mass
6.90x Earth (4.12e+25 kg)
Radius
1.90x Earth (12,129 km)
This planet: 1.90× Earth radiusEarth: 1× (baseline)
Surface Gravity
1.90x Earth (18.7 m/s²)
Surface Temperature
989 K (716 °C / 1,320 °F)
Rotation Period
162.5 hours/day (slower than Earth)
This planet: 162 h/dayEarth: 24 h/day

Orbital Environment

Star Type
K-type (Orange)
Distance from Star
0.07 AU (9.87 million km)
Orbital Period
7 days

Atmosphere

Minimal or none

Elemental Composition

Si - Silicon
36.6%
Fe - Iron
24.4%
Mg - Magnesium
12.2%

Surface Characteristics

Rocky surface with impact craters, possible volcanic features
The TerraForge exoplanet catalog: 5,572 real exoplanets run through the simulation, with a search field and rendered worlds grouped by type

New: The Exoplanet Catalog 🔭

Every confirmed planet NASA has measured well enough to build — 5,572 of them — is now in here, and none of them arrived with a label. Their real mass, radius, orbit and star go through the same simulation that runs everything you make, and it decides what each one is: gas giant, lava world, ocean, ice. Sixteen come out Earth-like. Find TRAPPIST-1e, stand on its surface, and see what a red dwarf's light actually looks like from the ground.

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