- sun
- 5.3× wider
- sky
- amber-orange
Illustration computed from this world’s measured and derived values, not a photograph.
HD 219134 f
HD 219134 f is a confirmed rocky exoplanet 21.3 ly from Earth in the constellation Cassiopeia, discovered in 2015 by Multiple Observatories.
Radial Velocity: spotted by the gravitational wobble the planet tugs in its star (what that means).
Its orange dwarf looks 5.3× 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 23 days, and at an estimated 249°C (481°F) it is blistering.
Catalog values (NASA Exoplanet Archive): mass 7.30 M⊕, radius 1.31 R⊕. Its catalog mass and radius imply a density of 17.9 g/cm³, denser than compressed iron, so they cannot both be right, and gravityfinder does not use HD 219134 f in gravity rankings or weight calculations.
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 249°C (481°F), sound would travel roughly 35% 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.
- !Blistering at about 249°C (481°F), far too hot for liquid water on the surface.
- !Likely tidally locked: one hemisphere in endless day, the other in permanent night.
A playful read of HD 219134 f’s measured and computed values, not a real advisory.
How long to get there · 21.3 ly awayCALCULATED
Zoom out: star → system → (soon) galaxy arm, host black hole, and a real image of the host galaxy.
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How far is HD 219134 f from Earth?
HD 219134 f lies about 21.3 light-years from Earth.
How long would it take to get to HD 219134 f?
At the speed of NASA's Parker Solar Probe, the fastest craft ever built, the journey would take about 33,223 years.
How hot is HD 219134 f?
HD 219134 f's equilibrium temperature, the balance it reaches from its star's light alone before any greenhouse warming, is about 249°C (481°F).
How long is a year on HD 219134 f?
HD 219134 f completes one orbit of its star in 23 days.
Illustration generated from HD 219134 f's confirmed parameters, not a photograph.