What it’s like to stand here
Kepler-257 d
- weight
- ≈ 0.89 g
- sun
- 6.5× wider
- sky
- amber-orange
Illustration computed from this world’s measured and derived values, not a photograph.
Ice / gas giant
Kepler-257 d
Transit: spotted by the tiny, repeating dip in its star’s light each time the planet crosses in front of it.
Kepler-257 →
host star
4.95 R⊕
radius
21.70 M⊕
mass · estimated from radius
25 days
orbital period
294°C (561°F)
avg temp
What it's like to stand here
≈ 0.89 g
surface gravity (no solid surface · mass estimated from size)
25 days
one year, in Earth time
6.5× wider
how big its sun looks vs ours
amber-orange
midday sky tint
1.1×
how high you could jump vs Earth
likely
likely tidally locked: probably eternal day on one side, night on the other
How long to get there · 2,545 ly away
Jet airliner
3.1 billion years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
4.0 million years
dies en route1000-yr cryo: fails
Light speed
2,545 years
dies en route1000-yr cryo: fails
Warp 10
3 years
arrives, just older
Folding spacetime
instant
arrives thriving
Size vs Earth
Explore from here · roam the neighborhood
Host star
Kepler-257
5180 K host star · 3 planets
Sibling worlds in this system
Nearby star systems
Zoom out: star → system → (soon) galaxy arm, host black hole, and a real image of the host galaxy.
Can you see it tonight? · observe
FAINT — LARGE TELESCOPE NEEDED
Host-star brightnessmag 15.7
ConstellationCygnus →
To see the host star10"+ (250 mm) telescope, dark sky
Gear bridge
Matched telescope & eyepiece recommendations are coming. Any product links will carry a clear affiliate disclosure.
Illustration generated from Kepler-257 d's confirmed parameters, not a photograph.