What it’s like to stand here
HD 39855 b
- weight
- ≥ 1.05 g
- sun
- 18.1× wider
- sky
- warm white
Illustration computed from this world’s measured and derived values, not a photograph.
Sub-Neptune
HD 39855 b
Radial Velocity: spotted by the gravitational wobble the planet tugs in its star.
HD 39855 →
host star
2.85 R⊕
radius
8.50 M⊕
mass · minimum (m·sin i)
3.2 days
orbital period
873°C (1603°F)
avg temp
What it's like to stand here
≥ 1.05 g
your weight (minimum mass only)
3.2 days
one year, in Earth time
18.1× wider
how big its sun looks vs ours
warm white
midday sky tint
1.0×
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 · 75.9 ly away
Jet airliner
91.0 million years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
118,317 years
dies en route1000-yr cryo: fails
Light speed
76 years
dies en route1000-yr cryo: survives
Warp 10
28 days
arrives thriving
Folding spacetime
instant
arrives thriving
Size vs Earth
Explore from here · roam the neighborhood
HD 39855 bSub-Neptune
PlanetKepler-244 bsimilar world
SystemHD 4518415 ly
Sky regionLepusthis direction
Host star
HD 39855
G8 V · 1 planet
Sibling worlds in this system
No other confirmed planets here yet. New ones auto-appear as telescopes report.
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
BINOCULARS NEEDED
Gear bridge
Matched telescope & eyepiece recommendations are coming. Any product links will carry a clear affiliate disclosure.
Illustration generated from HD 39855 b's confirmed parameters, not a photograph.