What it’s like to stand here
TOI-5817 b
weight
1.09 g
sun
11.7× wider
sky
warm white

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

Sub-Neptune

TOI-5817 b

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

TOI-5817
host star
3.08 R⊕
radius
10.30 M⊕
mass · measured
16 days
orbital period
677°C (1250°F)
avg temp
What it's like to stand here
1.09 g
your weight (measured mass)
16 days
one year, in Earth time
11.7× wider
how big its sun looks vs ours
warm 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 · 263 ly away
Jet airliner
316 million years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
410,777 years
dies en route1000-yr cryo: fails
Light speed
263 years
dies en route1000-yr cryo: survives
Warp 10
96 days
arrives thriving
Folding spacetime
instant
arrives thriving
Size vs Earth
EarthTOI-5817 b is 3.1× the width of Earth
Explore from here · roam the neighborhood
Host star
Binary system
TOI-5817
G2 IV-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
BINOCULARS NEEDED
Host-star brightnessmag 8.6
ConstellationPegasus
To see the host star50 mm binoculars
Gear bridge

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

Illustration generated from TOI-5817 b's confirmed parameters, not a photograph.