What it’s like to stand here
HD 139357 b
weight
43.14 g
sun
3.9× wider
sky
amber-orange

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

Gas giant

HD 139357 b

Radial Velocity: spotted by the gravitational wobble the planet tugs in its star.

HD 139357
host star
12.10 R⊕
radius
6,316 M⊕
mass · measured
3.1 years
orbital period
174°C (345°F)
avg temp
What it's like to stand here
43.14 g
surface gravity (no solid surface · measured mass)
3.1 years
one year, in Earth time
3.9× wider
how big its sun looks vs ours
amber-orange
midday sky tint
0.0×
how high you could jump vs Earth
normal
day/night cycle (not tidally locked)
How long to get there · 366 ly away
Jet airliner
438 million years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
570,175 years
dies en route1000-yr cryo: fails
Light speed
366 years
dies en route1000-yr cryo: survives
Warp 10
133 days
arrives thriving
Folding spacetime
instant
arrives thriving
Size vs Earth
EarthHD 139357 b is 12× the width of Earth
Explore from here · roam the neighborhood
Host star
HD 139357
K4 III · 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
VISIBLE TO THE NAKED EYE
Host-star brightnessmag 6.0
ConstellationDraco
To see the host starno equipment needed
Gear bridge

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

Illustration generated from HD 139357 b's confirmed parameters, not a photograph.