What it’s like to stand here
HN Lib b
weight
≥ 1.13 g
sun
2.1× wider
sky
deep orange

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

Sub-Neptune · likely temperate

HN Lib b

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

HN Lib
host star
2.20 R⊕
radius
5.46 M⊕
mass · minimum (m·sin i)
36 days
orbital period
-39°C (-38°F)
avg temp
What it's like to stand here
≥ 1.13 g
your weight (minimum mass only)
36 days
one year, in Earth time
2.1× 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 · 20.4 ly away
Jet airliner
24.4 million years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
31,764 years
dies en route1000-yr cryo: fails
Light speed
20 years
arrives elderly
Warp 10
7 days
arrives thriving
Folding spacetime
instant
arrives thriving
Size vs Earth
EarthHN Lib b is 2.2× the width of Earth
Explore from here · roam the neighborhood
Host star
HN Lib
M4.0 V · 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 11.3
ConstellationLibra
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 HN Lib b's confirmed parameters, not a photograph.