What it’s like to stand here
Kepler-509 b
weight
≈ 1.09 g
sun
5.1× wider
sky
bright white

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

Sub-Neptune

Kepler-509 b

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

Kepler-509
host star
2.49 R⊕
radius
6.76 M⊕
mass · estimated from radius
42 days
orbital period
311°C (592°F)
avg temp
What it's like to stand here
≈ 1.09 g
your weight (mass estimated from size)
42 days
one year, in Earth time
5.1× wider
how big its sun looks vs ours
bright white
midday sky tint
0.9×
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 · 1,084 ly away
Jet airliner
1.3 billion years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
1.7 million years
dies en route1000-yr cryo: fails
Light speed
1,084 years
dies en route1000-yr cryo: fails
Warp 10
1 years
arrives, just older
Folding spacetime
instant
arrives thriving
Size vs Earth
EarthKepler-509 b is 2.5× the width of Earth
Explore from here · roam the neighborhood
Host star
Kepler-509
6060 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
SMALL TELESCOPE NEEDED
Host-star brightnessmag 11.8
ConstellationCygnus
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 Kepler-509 b's confirmed parameters, not a photograph.