What it’s like to stand here

HD 160691 c

sun: 0.32× as wide
sky: warm white

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

HD 160691 c

HD 160691 c is a confirmed sub-Neptune exoplanet 50.9 ly from Earth in the constellation Ara, discovered in 2004 by Anglo-Australian Telescope.

50.9 lyDiscovered in 2004 by Anglo-Australian Telescope

Radial Velocity: spotted by the gravitational wobble the planet tugs in its star.

HD 160691 →

host star

–

radius

1,398 M⊕

mass · measured

10.8 years

orbital period

-116°C (-177°F)

avg temp

Human scale

Its yellow, Sun-like star looks 0.32× as wide as ours, bathing the surface in warm white light. A year here lasts 10.8 Earth years, and at an estimated -116°C (-177°F) it is deeply frozen.

–

gravity, needs mass + radius

10.8 years

one year, in Earth time

0.32× as wide

how big its sun looks vs ours

warm white

midday sky tint

–

jump, needs gravity

normal

day/night cycle (not tidally locked)

What these mean: surface gravity · tidal locking · equilibrium temperature

Hear how a voice sounds herea computed acoustic demo

Your voice would sound deeper and fuller.

Assuming Earth-like air at this world's temperature of about -116°C (-177°F), sound would travel roughly 26% slower than on Earth, so your voice would sound deeper and fuller. The real atmosphere is unknown, so this is a best guess.

sound speed ≈ 251 m/s · 0.74× 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.

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