What it’s like to stand here
K2-400 b
weight
≈ 1.23 g
sky
deep orange

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

Rocky world

K2-400 b

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

K2-400
host star
1.16 R⊕
radius
1.67 M⊕
mass · estimated from radius
3.9 days
orbital period
avg temp
What it's like to stand here
≈ 1.23 g
your weight (mass estimated from size)
3.9 days
one year, in Earth time
sun size, needs orbit
deep orange
midday sky tint
0.8×
how high you could jump vs Earth
rotation unknown
How long to get there · 203 ly away
Jet airliner
244 million years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
317,314 years
dies en route1000-yr cryo: fails
Light speed
203 years
dies en route1000-yr cryo: survives
Warp 10
74 days
arrives thriving
Folding spacetime
instant
arrives thriving
Size vs Earth
EarthK2-400 b is 1.2× the width of Earth
Explore from here · roam the neighborhood
Host star
K2-400
M3 · 1 planet
Explore →
Sibling worlds in this system

No other confirmed planets here yet. New ones auto-appear as telescopes report.

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 15.1
ConstellationSextans
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 K2-400 b's confirmed parameters, not a photograph.