- sun
- 0.14× as wide
- sky
- bright white
Illustration computed from this world’s measured and derived values, not a photograph.
51 Eri b
51 Eri b is a confirmed sub-Neptune exoplanet 97.1 ly from Earth in the constellation Eridanus, discovered in 2015 by Gemini Observatory.
Imaging: photographed directly, as a faint point of light beside its star.
Its yellow-white star looks 0.14× as wide as ours, bathing the surface in bright white light. A year here lasts 24.9 Earth years, and at an estimated 534°C (993°F) it is furnace-hot.
What these mean: surface gravity · tidal locking · equilibrium temperature
Hear how a voice sounds herea computed acoustic demo
Your voice would sound high and thin, almost cartoonish.
Assuming Earth-like air at this world's temperature of about 534°C (993°F), sound would travel roughly 67% 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.
- !Furnace-hot at around 534°C (993°F), with no liquid water and no shade anywhere.
A playful read of 51 Eri b’s measured and computed values, not a real advisory.
How long to get there · 97.1 ly away
No other confirmed planets here yet. New ones auto-appear as telescopes report.
Zoom out: star → system → (soon) galaxy arm, host black hole, and a real image of the host galaxy.
Matched telescope & eyepiece recommendations are coming. Any product links will carry a clear affiliate disclosure.
How far is 51 Eri b from Earth?
51 Eri b lies about 97.1 light-years from Earth.
How long would it take to get to 51 Eri b?
At the speed of NASA's Parker Solar Probe, the fastest craft ever built, the journey would take about 151,369 years.
How hot is 51 Eri b?
51 Eri b's equilibrium temperature, the balance it reaches from its star's light alone before any greenhouse warming, is about 534°C (993°F).
How long is a year on 51 Eri b?
51 Eri b completes one orbit of its star in 24.9 years.
Illustration generated from 51 Eri b's confirmed parameters, not a photograph.