What it’s like to stand here
K2-129 b
weight
≈ 1.04 g
sun
6.3× wider
sky
deep orange

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

Rocky world

K2-129 b

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

K2-129
host star
1.04 R⊕
radius
1.12 M⊕
mass · estimated from radius
8.2 days
orbital period
146°C (295°F)
avg temp
What it's like to stand here
≈ 1.04 g
your weight (mass estimated from size)
8.2 days
one year, in Earth time
6.3× wider
how big its sun looks vs ours
deep orange
midday sky tint
1.0×
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 · 90.7 ly away
Jet airliner
109 million years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
141,390 years
dies en route1000-yr cryo: fails
Light speed
91 years
dies en route1000-yr cryo: survives
Warp 10
33 days
arrives thriving
Folding spacetime
instant
arrives thriving
Size vs Earth
EarthK2-129 b is about the size of Earth
Explore from here · roam the neighborhood
Host star
K2-129
3459 K host star · 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
MID-SIZE TELESCOPE NEEDED
Host-star brightnessmag 13.6
ConstellationSagittarius
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 K2-129 b's confirmed parameters, not a photograph.