- weight
- ≥ 1.20 g
- sun
- 17.7× wider
- sky
- deep orange
Illustration computed from this world’s measured and derived values, not a photograph.
GJ 676 A d
GJ 676 A d is a confirmed sub-Neptune exoplanet 52.3 ly from Earth in the constellation Ara, discovered in 2012 by La Silla Observatory.
Radial Velocity: spotted by the gravitational wobble the planet tugs in its star.
Standing on GJ 676 A d, you would weigh roughly about 20% more than you do on Earth. Its orange dwarf looks 17.7× 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 3.6 days, and at an estimated 484°C (904°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
Gravity close to Earth's, at about 1.2 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 high and thin, almost cartoonish.
Assuming Earth-like air at this world's temperature of about 484°C (904°F), sound would travel roughly 62% 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 484°C (904°F), with no liquid water and no shade anywhere.
- Surface gravity is close to Earth's, at least 1.20 times, so you would move much as you do here.
- !Its star delivers about 60 times the sunlight Earth gets, a blinding, sterilizing glare.
- !Likely tidally locked: one hemisphere in endless day, the other in permanent night.
A playful read of GJ 676 A d’s measured and computed values, not a real advisory.
How long to get there · 52.3 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 676 A d?
GJ 676 A d's surface gravity is at least 1.2 times Earth's, and possibly more: its mass is only a lower bound.
How much would you weigh on GJ 676 A d?
Someone who weighs 150 pounds on Earth would weigh at least 181 pounds on GJ 676 A d.
How far is GJ 676 A d from Earth?
GJ 676 A d lies about 52.3 light-years from Earth.
How long would it take to get to GJ 676 A d?
At the speed of NASA's Parker Solar Probe, the fastest craft ever built, the journey would take about 81,526 years.
How hot is GJ 676 A d?
GJ 676 A d's equilibrium temperature, the balance it reaches from its star's light alone before any greenhouse warming, is about 484°C (904°F).
How long is a year on GJ 676 A d?
GJ 676 A d completes one orbit of its star in 3.6 days.
Illustration generated from GJ 676 A d's confirmed parameters, not a photograph.