- weight
- 1.78 g
- sun
- 5.3× wider
- sky
- warm white
Illustration computed from this world’s measured and derived values, not a photograph.
HD 224018 c
HD 224018 c is a confirmed sub-Neptune exoplanet 344 ly from Earth in the constellation Aquarius, discovered in 2025 by K2.
Transit: spotted by the tiny, repeating dip in its star’s light each time the planet crosses in front of it.
Standing on HD 224018 c, you would weigh about 78% more than you do on Earth. Its yellow, Sun-like star looks 5.3× wider than ours, bathing the surface in warm white 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 37 days, and at an estimated 368°C (694°F) it is blistering.
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
If your children grew up herea playful thought experiment
A little heavier than home, at 1.8 times Earth's gravity. A child raised here would likely grow a little shorter and sturdier than their Earth-raised parents, about 0.89x as tall as on Earth: a 5 ft 10 in adult could stand nearer 5 ft 2 in, with denser bones.
- Bones
- Thick and dense
- More weight to bear forces the skeleton to grow denser and stronger all through childhood.
A playful thought experiment from this world’s gravity, not a prediction about any real person. No human has ever grown up off Earth, so no one truly knows; the direction (taller in low gravity, shorter and stockier in high) follows how growing bodies respond to weight.
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 368°C (694°F), sound would travel roughly 49% 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 368°C (694°F), far too hot for liquid water on the surface.
- !Noticeably heavy, 1.8 times Earth's gravity.
- !Likely tidally locked: one hemisphere in endless day, the other in permanent night.
A playful read of HD 224018 c’s measured and computed values, not a real advisory.
How long to get there · 344 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.
What is the gravity on HD 224018 c?
HD 224018 c's surface gravity is about 1.8 times Earth's.
How much would you weigh on HD 224018 c?
Someone who weighs 150 pounds on Earth would weigh about 266 pounds on HD 224018 c.
How far is HD 224018 c from Earth?
HD 224018 c lies about 344 light-years from Earth.
How long would it take to get to HD 224018 c?
At the speed of NASA's Parker Solar Probe, the fastest craft ever built, the journey would take about 536,551 years.
How hot is HD 224018 c?
HD 224018 c's equilibrium temperature, the balance it reaches from its star's light alone before any greenhouse warming, is about 368°C (694°F).
How long is a year on HD 224018 c?
HD 224018 c completes one orbit of its star in 37 days.
Illustration generated from HD 224018 c's confirmed parameters, not a photograph.