What it’s like to stand here
K2-18 b
weight
1.59 g
sun
2.9× wider
sky
deep orange

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

Sub-Neptune · likely temperate

K2-18 b

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

K2-18
host star
2.37 R⊕
radius
8.92 M⊕
mass · measured
33 days
orbital period
11°C (52°F)
avg temp
What it's like to stand here
1.59 g
your weight (measured mass)
33 days
one year, in Earth time
2.9× wider
how big its sun looks vs ours
deep orange
midday sky tint
0.6×
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 · 124 ly away
Jet airliner
149 million years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
193,432 years
dies en route1000-yr cryo: fails
Light speed
124 years
dies en route1000-yr cryo: survives
Warp 10
45 days
arrives thriving
Folding spacetime
instant
arrives thriving
Size vs Earth
EarthK2-18 b is 2.4× the width of Earth
Explore from here · roam the neighborhood
Host star
K2-18
M2.5 V · 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
MID-SIZE TELESCOPE NEEDED
Host-star brightnessmag 13.5
ConstellationLeo
To see the host star8-10" (200-250 mm) telescope
Gear bridge

Matched telescope & eyepiece recommendations are coming. Any product links will carry a clear affiliate disclosure.

Illustration generated from K2-18 b's confirmed parameters, not a photograph.