What it’s like to stand here
Kepler-57 b
weight
2.55 g
sun
13.8× wider
sky
amber-orange

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

Sub-Neptune

Kepler-57 b

Transit: spotted by the tiny, repeating dip in its star’s light each time the planet crosses in front of it.

Kepler-57
host star
3.13 R⊕
radius
25.06 M⊕
mass · measured
5.7 days
orbital period
577°C (1070°F)
avg temp
What it's like to stand here
2.55 g
your weight (measured mass)
5.7 days
one year, in Earth time
13.8× wider
how big its sun looks vs ours
amber-orange
midday sky tint
0.4×
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 · 2,101 ly away
Jet airliner
2.5 billion years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
3.3 million years
dies en route1000-yr cryo: fails
Light speed
2,101 years
dies en route1000-yr cryo: fails
Warp 10
2 years
arrives, just older
Folding spacetime
instant
arrives thriving
Size vs Earth
EarthKepler-57 b is 3.1× the width of Earth
Explore from here · roam the neighborhood
Host star
Kepler-57
5188 K host star · 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
FAINT — LARGE TELESCOPE NEEDED
Host-star brightnessmag 15.0
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-57 b's confirmed parameters, not a photograph.