What it’s like to stand here
HD 128717 b
- weight
- 42.98 g
- sun
- 0.26× as wide
- sky
- bright white
Illustration computed from this world’s measured and derived values, not a photograph.
Gas giant
HD 128717 b
Astrometry: spotted by the side-to-side wobble it makes its star trace across the sky.
HD 128717 →
host star
12.10 R⊕
radius
6,293 M⊕
mass · measured
9.4 years
orbital period
-121°C (-186°F)
avg temp
What it's like to stand here
42.98 g
surface gravity (no solid surface · measured mass)
9.4 years
one year, in Earth time
0.26× as wide
how big its sun looks vs ours
bright white
midday sky tint
0.0×
how high you could jump vs Earth
normal
day/night cycle (not tidally locked)
How long to get there · 240 ly away
Jet airliner
288 million years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
374,569 years
dies en route1000-yr cryo: fails
Light speed
240 years
dies en route1000-yr cryo: survives
Warp 10
88 days
arrives thriving
Folding spacetime
instant
arrives thriving
Size vs Earth
Explore from here · roam the neighborhood
Host star
HD 128717
6210 K host star · 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 128717 b's confirmed parameters, not a photograph.