What it’s like to stand here
TOI-5398 c
weight
0.95 g
sun
18.4× wider
sky
bright white

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

Ice / gas giant

TOI-5398 c

ESI 0.15427 lyDiscovered in 2023 by Transiting Exoplanet Survey Satellite (TESS)

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

TOI-5398 →
host star
3.52 R⊕
radius
11.80 M⊕
mass · measured
4.8 days
orbital period
969°C (1776°F)
avg temp
What it's like to stand here
0.95 g
surface gravity (no solid surface · measured mass)
4.8 days
one year, in Earth time
18.4× wider
how big its sun looks vs ours
bright white
midday sky tint
1.1×
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 · 427 ly away
Jet airliner
512 million years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
665,628 years
dies en route1000-yr cryo: fails
Light speed
427 years
dies en route1000-yr cryo: survives
Warp 10
156 days
arrives thriving
Folding spacetime
instant
arrives thriving
Size vs Earth
EarthTOI-5398 c is 3.5× the width of Earth
Explore from here · roam the neighborhood
TOI-5398 cIce / gas giant
PlanetTOI-5398 bGas giant
PlanetTOI-921 bsimilar world
SystemTOI-177598 ly
Sky regionLeo Minorthis direction
Host star
TOI-5398
G V · 2 planets
Explore →
Sibling worlds in this system
Nearby star systems
Similar worlds (size · gravity · star)

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 10.1
ConstellationLeo Minor →
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 TOI-5398 c's confirmed parameters, not a photograph.