What it’s like to stand here
HD 21520 b
- weight
- 2.43 g
- sun
- 6.0× wider
- sky
- warm white
Illustration computed from this world’s measured and derived values, not a photograph.
Sub-Neptune
HD 21520 b
Transit: spotted by the tiny, repeating dip in its star’s light each time the planet crosses in front of it.
What it's like to stand here
2.43 g
your weight (measured mass)
25 days
one year, in Earth time
6.0× wider
how big its sun looks vs ours
warm white
midday sky tint
0.4×
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 · 258 ly away
Jet airliner
310 million years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
402,912 years
dies en route1000-yr cryo: fails
Light speed
258 years
dies en route1000-yr cryo: survives
Warp 10
94 days
arrives thriving
Folding spacetime
instant
arrives thriving
Size vs Earth
Explore from here · roam the neighborhood
HD 21520 bSub-Neptune
PlanetTOI-1422 csimilar world
SystemTOI-25735 ly
Sky regionEridanusthis direction
Host star
HD 21520
5871 K host star · 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 21520 b's confirmed parameters, not a photograph.