- weight
- 1.34 g
- sun
- 18.6× wider
- sky
- bright white
Illustration computed from this world’s measured and derived values, not a photograph.
HD 25463 b
HD 25463 b is a confirmed sub-Neptune exoplanet 149 ly from Earth in the constellation Taurus, discovered in 2023 by Transiting Exoplanet Survey Satellite (TESS).
Transit: spotted by the tiny, repeating dip in its star’s light each time the planet crosses in front of it.
Standing on HD 25463 b, you would weigh about 34% more than you do on Earth. Its yellow-white star looks 18.6× wider than ours, bathing the surface in bright 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 7.0 days, and at an estimated 925°C (1698°F) it is furnace-hot.
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 1.3 times Earth's gravity. A child raised here would likely grow a little shorter and sturdier than their Earth-raised parents, about 0.94x as tall as on Earth: a 5 ft 10 in adult could stand nearer 5 ft 6 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 925°C (1698°F), sound would travel roughly 104% 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 925°C (1698°F), with no liquid water and no shade anywhere.
- Surface gravity is close to Earth's, 1.34 times, so you would move much as you do here.
- !Its star delivers about 461 times the sunlight Earth gets, a blinding, sterilizing glare.
- !Earth-similarity index 0.18: this world has almost nothing in common with our own.
- !Likely tidally locked: one hemisphere in endless day, the other in permanent night.
A playful read of HD 25463 b’s measured and computed values, not a real advisory.
How long to get there · 149 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 25463 b?
HD 25463 b's surface gravity is about 1.3 times Earth's.
How much would you weigh on HD 25463 b?
Someone who weighs 150 pounds on Earth would weigh about 201 pounds on HD 25463 b.
How far is HD 25463 b from Earth?
HD 25463 b lies about 149 light-years from Earth.
How long would it take to get to HD 25463 b?
At the speed of NASA's Parker Solar Probe, the fastest craft ever built, the journey would take about 232,048 years.
How hot is HD 25463 b?
HD 25463 b's equilibrium temperature, the balance it reaches from its star's light alone before any greenhouse warming, is about 925°C (1698°F).
How long is a year on HD 25463 b?
HD 25463 b completes one orbit of its star in 7.0 days.
Illustration generated from HD 25463 b's confirmed parameters, not a photograph.