What it’s like to stand here
HD 171238 b
- weight
- 17.90 g
- sun
- 0.40× as wide
- sky
- warm white
Illustration computed from this world’s measured and derived values, not a photograph.
Gas giant
HD 171238 b
Radial Velocity: spotted by the gravitational wobble the planet tugs in its star.
HD 171238 →
host star
12.50 R⊕
radius
2,797 M⊕
mass · measured
4.1 years
orbital period
-106°C (-159°F)
avg temp
What it's like to stand here
17.90 g
surface gravity (no solid surface · measured mass)
4.1 years
one year, in Earth time
0.40× as wide
how big its sun looks vs ours
warm white
midday sky tint
0.1×
how high you could jump vs Earth
normal
day/night cycle (not tidally locked)
How long to get there · 146 ly away
Jet airliner
175 million years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
227,944 years
dies en route1000-yr cryo: fails
Light speed
146 years
dies en route1000-yr cryo: survives
Warp 10
53 days
arrives thriving
Folding spacetime
instant
arrives thriving
Size vs Earth
Explore from here · roam the neighborhood
Host star
HD 171238
G8 V · 1 planet
Sibling worlds in this system
No other confirmed planets here yet. New ones auto-appear as telescopes report.
Nearby star systems
Similar worlds (size · gravity · star)
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
Gear bridge
Matched telescope & eyepiece recommendations are coming. Any product links will carry a clear affiliate disclosure.
Illustration generated from HD 171238 b's confirmed parameters, not a photograph.