What it’s like to stand here
HD 40307 c
- sun
- 9.0× wider
- sky
- amber-orange
Illustration computed from this world’s measured and derived values, not a photograph.
Sub-Neptune
HD 40307 c
Radial Velocity: spotted by the gravitational wobble the planet tugs in its star.
What it's like to stand here
–
gravity, needs mass + radius
9.6 days
one year, in Earth time
9.0× wider
how big its sun looks vs ours
amber-orange
midday sky tint
–
jump, needs gravity
likely
likely tidally locked: probably eternal day on one side, night on the other
How long to get there · 42.2 ly away
Jet airliner
50.6 million years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
65,804 years
dies en route1000-yr cryo: fails
Light speed
42 years
arrives elderly
Warp 10
15 days
arrives thriving
Folding spacetime
instant
arrives thriving
Size vs Earth
Explore from here · roam the neighborhood
Host star
HD 40307
K2.5 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 40307 c's confirmed parameters, not a photograph.