Epic exoplanet 55 EP

HD 3167 b

RA 8.7401° · Dec 4.3807° · exoplanet

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Score breakdown

· 6 badges

55 pts · Epic

Epic 68 pts → Anomaly

Lava world +14
Ultra-short period +14
Super-Earth +8
Blasted by starlight +8
Multi-planet system +6
Confirmed exoplanet +5

Total score 55

13 more points to reach Anomaly.

Badges

Confirmed exoplanet · +5
Super-Earth · +8
Lava world · +14
Ultra-short period · +14
Multi-planet system · +6
Blasted by starlight · +8

Trivia

What makes it special

Lava world. Its surface is likely an ocean of molten rock.

Could we get there?

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

Getting there

Aboard Voyager 1. ≈ 2.7 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 240.8 thousand years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 1542 years in a starship at a tenth of light speed.
Distance. 154 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 1872.

Saying hello

Say hello. A radio message and its reply would take 308 years round-trip.

Standing on it

A year here. A full year lasts just 1 Earth days.

By the numbers

Size. About 1.7× the width of Earth.
Volume. About 4.7 Earths could fit inside it.
Mass. About 5× the mass of Earth.
Your weight. You'd weigh about 1.8× your Earth weight standing here.
Temperature. Around 1501°C — hotter than a self-cleaning oven.

How we found it

Discovery. Found by K2 using the transit method.

Cosmic context

Crowded system. One of at least 4 planets orbiting its star.

Properties

density gcc: 5.6
discovery facility: K2
discovery method: Transit
dist ly: 154.2388
eccentricity: 0
eq temp k: 1774
insolation: 1650
mass earth: 4.97
name: HD 3167 b
orbital period days: 0.9596
radius earth: 1.67
sys num planets: 4

About HD 3167 b

HD 3167 b is an epic exoplanet. It lies about 154.2 light-years from Earth, has an equilibrium temperature near 1,774 K, spans roughly 1.67 Earth radii and weighs about 4.97 Earth masses.

Its surface is likely an ocean of molten rock.

How to see it

Like any astronomical target, HD 3167 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 3167 b is an epic exoplanet

HD 3167 b scores 55 points on Spacedle's rarity scale, which places it in the epic tier. Another 13 points would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, Super-Earth, Lava world, Ultra-short period, Multi-planet system and Blasted by starlight — 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.