What it’s like to stand here
GJ 229 b
weight
≥ 0.95 g
sun
0.42× as wide
sky
deep orange

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

Ice / gas giant

GJ 229 b

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

GJ 229
host star
3.97 R⊕
radius
14.94 M⊕
mass · minimum (m·sin i)
579 days
orbital period
-161°C (-258°F)
avg temp
What it's like to stand here
≥ 0.95 g
surface gravity (no solid surface · minimum mass only)
579 days
one year, in Earth time
0.42× as wide
how big its sun looks vs ours
deep orange
midday sky tint
1.1×
how high you could jump vs Earth
normal
day/night cycle (not tidally locked)
How long to get there · 18.8 ly away
Jet airliner
22.5 million years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
29,281 years
dies en route1000-yr cryo: fails
Light speed
19 years
arrives elderly
Warp 10
7 days
arrives thriving
Folding spacetime
instant
arrives thriving
Size vs Earth
EarthGJ 229 b is 4.0× the width of Earth
Explore from here · roam the neighborhood
Host star
Triple system
GJ 229
M1.5V · 2 planets
Explore →
Sibling worlds in this system

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

Can you see it tonight? · observe
BINOCULARS NEEDED
Host-star brightnessmag 8.2
ConstellationLepus
To see the host star50 mm binoculars
Gear bridge

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

Illustration generated from GJ 229 b's confirmed parameters, not a photograph.