What it’s like to stand here
HD 20781 d
- weight
- ≥ 1.00 g
- sun
- 5.1× wider
- sky
- warm white
Illustration computed from this world’s measured and derived values, not a photograph.
Sub-Neptune
HD 20781 d
Radial Velocity: spotted by the gravitational wobble the planet tugs in its star.
HD 20781 →
host star
3.25 R⊕
radius
10.61 M⊕
mass · minimum (m·sin i)
29 days
orbital period
297°C (567°F)
avg temp
What it's like to stand here
≥ 1.00 g
your weight (minimum mass only)
29 days
one year, in Earth time
5.1× 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 · 117 ly away
Jet airliner
141 million years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
182,978 years
dies en route1000-yr cryo: fails
Light speed
117 years
dies en route1000-yr cryo: survives
Warp 10
43 days
arrives thriving
Folding spacetime
instant
arrives thriving
Size vs Earth
Explore from here · roam the neighborhood
Host star
Binary systemHD 20781
K0 V · 5 planets
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
BINOCULARS NEEDED
Gear bridge
Matched telescope & eyepiece recommendations are coming. Any product links will carry a clear affiliate disclosure.
Illustration generated from HD 20781 d's confirmed parameters, not a photograph.