Epic exoplanet 67 EP

HD 106906 b

RA 184.4713° · Dec -55.9756° · exoplanet

Loading sky survey…

🌌 View in 3D star map

Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 6 badges

67 pts · Epic

Epic 68 pts → Anomaly

Denser than iron +18
Directly imaged +16
Lava world +14
Hot Jupiter +10
Confirmed exoplanet +5
Gas giant +4

Total score 67

1 more point to reach Anomaly.

Badges

Confirmed exoplanet · +5
Gas giant · +4
Hot Jupiter · +10
Lava world · +14
Denser than iron · +18
Directly imaged · +16

Trivia

What makes it special

Lava world. Its surface is likely an ocean of molten rock.
Heavyweight. Packed denser than solid iron.

Could we get there?

Verdict. Hopelessly far for any craft humanity can build today.

Getting there

Aboard Voyager 1. ≈ 5.9 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 524.7 thousand years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 3360 years in a starship at a tenth of light speed.
Distance. 336 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 1690.

Saying hello

Say hello. A radio message and its reply would take 672 years round-trip.

By the numbers

Size. About 12.4× the width of Earth.
Volume. About 1907 Earths could fit inside it.
Mass. Roughly 3496× Earth's mass — about 11 Jupiters.
Your weight. You'd weigh about 22.7× your Earth weight standing here.
Density. Denser than solid iron.
Temperature. Around 1527°C — hotter than a self-cleaning oven.

How we found it

Discovery. Found by Las Campanas Observatory using the imaging method.

Properties

density gcc: 10.1
discovery facility: Las Campanas Observatory
discovery method: Imaging
dist ly: 336.0353
eq temp k: 1800
insolation: 0
mass earth: 3496
name: HD 106906 b
radius earth: 12.4
sys num planets: 1

About HD 106906 b

HD 106906 b is an epic exoplanet. It lies about 336 light-years from Earth, has an equilibrium temperature near 1,800 K, spans roughly 12.4 Earth radii and weighs about 3,496 Earth masses.

Its surface is likely an ocean of molten rock.

How to see it

Like any astronomical target, HD 106906 b is best seen from a dark site away from city lights, and when it is above the horizon depends on your latitude and the time of year. The visibility panel above works out tonight's viewing window for your saved location.

Why HD 106906 b is an epic exoplanet

HD 106906 b scores 67 points on Spacedle's rarity scale, which places it in the epic tier. Another 1 point would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, Gas giant, Hot Jupiter, Lava world, Denser than iron and Directly imaged — each earned for a real, measurable property of the object. Rarity on Spacedle is never random: the more remarkable an object's astrophysics, the more badges it collects, the higher it scores, and the rarer it ranks.