What it’s like to stand here
K2-100 b
weight
1.45 g
sun
40.7× wider
sky
warm white

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

Ice / gas giant

K2-100 b

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

K2-100
host star
3.88 R⊕
radius
21.80 M⊕
mass · measured
1.7 days
orbital period
1568°C (2854°F)
avg temp
What it's like to stand here
1.45 g
surface gravity (no solid surface · measured mass)
1.7 days
one year, in Earth time
40.7× wider
how big its sun looks vs ours
warm white
midday sky tint
0.7×
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 · 616 ly away
Jet airliner
739 million years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
961,189 years
dies en route1000-yr cryo: fails
Light speed
616 years
dies en route1000-yr cryo: survives
Warp 10
225 days
arrives thriving
Folding spacetime
instant
arrives thriving
Size vs Earth
EarthK2-100 b is 3.9× the width of Earth
Explore from here · roam the neighborhood
Host star
K2-100
G0 V · 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
SMALL TELESCOPE NEEDED
Host-star brightnessmag 10.7
ConstellationCancer
To see the host star4-6" (100-150 mm) telescope
Gear bridge

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

Illustration generated from K2-100 b's confirmed parameters, not a photograph.