What it’s like to stand here
HR 858 c
weight
0.97 g
sun
18.3× wider
sky
bright white

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

Sub-Neptune

HR 858 c

ESI 0.17104 lyDiscovered in 2019 by Transiting Exoplanet Survey Satellite (TESS)

Transit: spotted by the tiny, repeating dip in its star’s light each time the planet crosses in front of it.

HR 858 →
host star
1.98 R⊕
radius
3.80 M⊕
mass · measured
6.0 days
orbital period
1036°C (1897°F)
avg temp
What it's like to stand here
0.97 g
your weight (measured mass)
6.0 days
one year, in Earth time
18.3× wider
how big its sun looks vs ours
bright 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 · 104 ly away
Jet airliner
125 million years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
162,593 years
dies en route1000-yr cryo: fails
Light speed
104 years
dies en route1000-yr cryo: survives
Warp 10
38 days
arrives thriving
Folding spacetime
instant
arrives thriving
Size vs Earth
EarthHR 858 c is 2.0× the width of Earth
Explore from here · roam the neighborhood
HR 858 cSub-Neptune
PlanetHR 858 bSub-Neptune
PlanetHR 858 dSub-Neptune
PlanetDMPP-1 esimilar world
SystemHD 2141116 ly
Sky regionFornaxthis direction
Host star
Binary system
HR 858
F6 V · 3 planets
Explore →
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
Host-star brightnessmag 6.4
ConstellationFornax →
To see the host star50 mm binoculars
Gear bridge

Matched telescope & eyepiece recommendations are coming. Any product links will carry a clear affiliate disclosure.

Illustration generated from HR 858 c's confirmed parameters, not a photograph.