- weight
- ≥ 1.00 g
- sun
- 3.3× wider
- sky
- deep orange
Illustration computed from this world’s measured and derived values, not a photograph.
GJ 422 b
GJ 422 b is a confirmed sub-Neptune exoplanet 41.3 ly from Earth in the constellation Carina, discovered in 2014 by Multiple Observatories.
Radial Velocity: spotted by the gravitational wobble the planet tugs in its star.
Standing on GJ 422 b, you would weigh roughly almost exactly what you weigh on Earth. Its red dwarf looks 3.3× wider than ours, bathing the surface in deep orange 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 20 days, and at an estimated 20°C (67°F) it is warm.
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 · habitable zone
If your children grew up herea playful thought experiment
Gravity close to Earth's, at about 1.00 times. A child would grow up much as they would back home.
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 much as it does on Earth.
Assuming Earth-like air at this world's temperature of about 20°C (67°F), sound would travel close to its Earth speed, so your voice would sound much as it does on Earth. The real atmosphere is unknown.
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 20°C (67°F) fall in the range where liquid water is at least possible.
- Surface gravity is close to Earth's, at least 1.00 times, so you would move much as you do here.
- !Likely tidally locked: one hemisphere in endless day, the other in permanent night.
A playful read of GJ 422 b’s measured and computed values, not a real advisory.
How long to get there · 41.3 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.
What is the gravity on GJ 422 b?
GJ 422 b's surface gravity is at least 1.00 times Earth's, and possibly more: its mass is only a lower bound.
How much would you weigh on GJ 422 b?
Someone who weighs 150 pounds on Earth would weigh at least 150 pounds on GJ 422 b.
How far is GJ 422 b from Earth?
GJ 422 b lies about 41.3 light-years from Earth.
How long would it take to get to GJ 422 b?
At the speed of NASA's Parker Solar Probe, the fastest craft ever built, the journey would take about 64,414 years.
How hot is GJ 422 b?
GJ 422 b's equilibrium temperature, the balance it reaches from its star's light alone before any greenhouse warming, is about 20°C (67°F).
Is GJ 422 b habitable?
GJ 422 b orbits near its star's habitable zone, the range of distances where liquid water could be stable, and its Earth-similarity index is 0.62. 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 GJ 422 b?
GJ 422 b completes one orbit of its star in 20 days.
Illustration generated from GJ 422 b's confirmed parameters, not a photograph.