- weight
- ≥ 1.33 g
- sun
- about the same
- sky
- dim red
Illustration computed from this world’s measured and derived values, not a photograph.
GJ 3323 c
GJ 3323 c is a confirmed rocky exoplanet 17.5 ly from Earth in the constellation Eridanus, discovered in 2017 by La Silla Observatory.
Radial Velocity: spotted by the gravitational wobble the planet tugs in its star.
Standing on GJ 3323 c, you would weigh roughly about 33% more than you do on Earth. Its red dwarf looks about the same size as ours, bathing the surface in dim red 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 41 days, and at an estimated -125°C (-194°F) it is colder than almost anywhere in the solar system.
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 about 1.3 times Earth's gravity. A child raised here would likely grow a little shorter and sturdier than their Earth-raised parents, about 0.95x 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 deeper and fuller.
Assuming Earth-like air at this world's temperature of about -125°C (-194°F), sound would travel roughly 28% slower than on Earth, so your voice would sound deeper and fuller. 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.
- !Deeply frozen at around -125°C (-194°F), far below the freezing point of water.
- Surface gravity is close to Earth's, at least 1.33 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 3323 c’s measured and computed values, not a real advisory.
How long to get there · 17.5 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 GJ 3323 c?
GJ 3323 c's surface gravity is at least 1.3 times Earth's, and possibly more: its mass is only a lower bound.
How much would you weigh on GJ 3323 c?
Someone who weighs 150 pounds on Earth would weigh at least 199 pounds on GJ 3323 c.
How far is GJ 3323 c from Earth?
GJ 3323 c lies about 17.5 light-years from Earth.
How long would it take to get to GJ 3323 c?
At the speed of NASA's Parker Solar Probe, the fastest craft ever built, the journey would take about 27,341 years.
How hot is GJ 3323 c?
GJ 3323 c's equilibrium temperature, the balance it reaches from its star's light alone before any greenhouse warming, is about -125°C (-194°F).
How long is a year on GJ 3323 c?
GJ 3323 c completes one orbit of its star in 41 days.
Illustration generated from GJ 3323 c's confirmed parameters, not a photograph.