What it’s like to stand here
HD 219134 g
weight
≥ 1.00 g
sun
2.1× wider
sky
amber-orange

Illustration computed from this world’s measured and derived values, not a photograph.

HD 219134 g

HD 219134 g is a confirmed sub-Neptune exoplanet 21.3 ly from Earth in the constellation Cassiopeia, discovered in 2015 by Multiple Observatories.

ESI 0.5621.3 lyDiscovered in 2015 by Multiple ObservatoriesDisputed detection

Radial Velocity: spotted by the gravitational wobble the planet tugs in its star.

HD 219134
host star
3.28 R⊕
radius
10.81 M⊕
mass · minimum (m·sin i)
94 days
orbital period
66°C (151°F)
avg temp
Human scale

Standing on HD 219134 g, you would weigh roughly almost exactly what you weigh on Earth. Its orange dwarf looks 2.1× wider than ours, bathing the surface in amber-orange light. A year passes in just 94 days, and at an estimated 66°C (151°F) it is warm.

≥ 1.00 g
your weight (minimum mass only)
94 days
one year, in Earth time
2.1× wider
how big its sun looks vs ours
amber-orange
midday sky tint
1.0×
how high you could jump vs Earth
normal
day/night cycle (not tidally locked)
Calculate your exact weight on HD 219134 g
Earth Similarity Index0.56#410 of 5,788 ranked worlds

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
EARTH HEIGHT≈ 1.00xEARTH-RAISEDRAISED HERE
much like Earth height

Gravity close to Earth's, at about 1.0 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 noticeably higher and reedier.

Assuming Earth-like air at this world's temperature of about 66°C (151°F), sound would travel roughly 9% faster than on Earth, so your voice would sound noticeably higher and reedier. The real atmosphere is unknown, so this is a best guess.

sound speed ≈ 369 m/s · 1.09× Earth · assumes Earth-like air

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.

The journey
Cosmic travel advisory
★★★★
Recommended, with reservations
  • !Persistently hot at around 66°C (151°F), well above anything you would call comfortable.
  • Surface gravity is close to Earth's, at least 1.00 times, so you would move much as you do here.

A playful read of HD 219134 g’s measured and computed values, not a real advisory.

How long to get there · 21.3 ly away
Jet airliner
25.5 million years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
33,223 years
dies en route1000-yr cryo: fails
Light speed
21 years
arrives middle-aged
Warp 10
8 days
arrives thriving
Folding spacetimeinstant, plus 1 hr of paperwork
1 hour
arrives thriving
Size vs Earth
EarthHD 219134 g is 3.3× the width of Earth
Explore from here · roam the neighborhood

Zoom out: star → system → (soon) galaxy arm, host black hole, and a real image of the host galaxy.

Can you see it tonight? · observe
VISIBLE TO THE NAKED EYE
Host-star brightnessmag 5.6
ConstellationCassiopeia
To see the host starno equipment needed
Gear bridge

Matched telescope & eyepiece recommendations are coming. Any product links will carry a clear affiliate disclosure.

Common questions

What is the gravity on HD 219134 g?

HD 219134 g's surface gravity is at least 1.0 times Earth's, and possibly more: its mass is only a lower bound.

How much would you weigh on HD 219134 g?

Someone who weighs 150 pounds on Earth would weigh at least 151 pounds on HD 219134 g.

How far is HD 219134 g from Earth?

HD 219134 g lies about 21.3 light-years from Earth.

How long would it take to get to HD 219134 g?

At the speed of NASA's Parker Solar Probe, the fastest craft ever built, the journey would take about 33,223 years.

How hot is HD 219134 g?

HD 219134 g's equilibrium temperature, the balance it reaches from its star's light alone before any greenhouse warming, is about 66°C (151°F).

How long is a year on HD 219134 g?

HD 219134 g completes one orbit of its star in 94 days.

Illustration generated from HD 219134 g's confirmed parameters, not a photograph.