What it’s like to stand here
GJ 3942 b
weight
≥ 1.08 g
sun
10.0× wider
sky
deep orange

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

Sub-Neptune

GJ 3942 b

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

GJ 3942
host star
2.57 R⊕
radius
7.14 M⊕
mass · minimum (m·sin i)
6.9 days
orbital period
317°C (602°F)
avg temp
What it's like to stand here
≥ 1.08 g
your weight (minimum mass only)
6.9 days
one year, in Earth time
10.0× wider
how big its sun looks vs ours
deep orange
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 · 55.2 ly away
Jet airliner
66.2 million years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
86,112 years
dies en route1000-yr cryo: fails
Light speed
55 years
dies en route1000-yr cryo: survives
Warp 10
20 days
arrives thriving
Folding spacetime
instant
arrives thriving
Size vs Earth
EarthGJ 3942 b is 2.6× the width of Earth
Explore from here · roam the neighborhood
Host star
GJ 3942
M0 · 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 10.2
ConstellationDraco
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 GJ 3942 b's confirmed parameters, not a photograph.