- sun
- 0.78× as wide
- sky
- warm white
Illustration computed from this world’s measured and derived values, not a photograph.
HD 10180 g
HD 10180 g is a confirmed sub-Neptune exoplanet 127 ly from Earth in the constellation Hydrus, discovered in 2010 by La Silla Observatory.
Radial Velocity: spotted by the gravitational wobble the planet tugs in its star.
Its yellow, Sun-like star looks 0.78× as wide as ours, bathing the surface in warm white light. A year here lasts 1.7 Earth years, and at an estimated -22°C (-7°F) it is cold.
What these mean: surface gravity · tidal locking · equilibrium temperature · habitable zone
Hear how a voice sounds herea computed acoustic demo
Your voice would sound much as it does on Earth.
Assuming Earth-like air at this world's temperature of about -22°C (-7°F), sound would travel roughly 7% slower than on Earth, so your voice would sound much as it does on Earth. 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.
- Surface temperatures near -22°C (-7°F) fall in the range where liquid water is at least possible.
- It orbits within the habitable zone, where a world could in principle hold liquid water.
A playful read of HD 10180 g’s measured and computed values, not a real advisory.
How long to get there · 127 ly away
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 HD 10180 g from Earth?
HD 10180 g lies about 127 light-years from Earth.
How long would it take to get to HD 10180 g?
At the speed of NASA's Parker Solar Probe, the fastest craft ever built, the journey would take about 198,184 years.
How hot is HD 10180 g?
HD 10180 g's equilibrium temperature, the balance it reaches from its star's light alone before any greenhouse warming, is about -22°C (-7°F).
Is HD 10180 g habitable?
HD 10180 g orbits inside its star's habitable zone, the range of distances where liquid water could be stable. That makes it worth studying, but it is not evidence of life: we have no measurement of its atmosphere, water, or surface.
How long is a year on HD 10180 g?
HD 10180 g completes one orbit of its star in 1.7 years.
Illustration generated from HD 10180 g's confirmed parameters, not a photograph.