Rare exoplanet 42 EP

HD 93351 b

RA 161.6779° · Dec -1.6886° · exoplanet

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Score breakdown

· 5 badges

42 pts · Rare

Rare 46 pts → Epic

Lava world +14
Eccentric orbit +9
Super-Earth +8
Multi-planet system +6
Confirmed exoplanet +5

Total score 42

4 more points to reach Epic.

Badges

Confirmed exoplanet · +5
Super-Earth · +8
Lava world · +14
Eccentric orbit · +9
Multi-planet system · +6

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. ≈ 3.2 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 286 thousand years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 1832 years in a starship at a tenth of light speed.
Distance. 183 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 1843.

Saying hello

Say hello. A radio message and its reply would take 366 years round-trip.

Standing on it

A year here. A full year lasts just 2.5 Earth days.

By the numbers

Size. About 1.7× the width of Earth.
Volume. About 4.8 Earths could fit inside it.
Mass. About 3.5× the mass of Earth.
Your weight. You'd weigh about 1.2× your Earth weight standing here.
Temperature. Around 1058°C — hotter than a self-cleaning oven.

How we found it

Discovery. Found by Multiple Observatories using the radial velocity method.

Cosmic context

Crowded system. One of at least 2 planets orbiting its star.

Properties

density gcc: 3.98
discovery facility: Multiple Observatories
discovery method: Radial Velocity
dist ly: 183.179
eccentricity: 0.549
eq temp k: 1330.76
insolation: 522.5845
mass earth: 3.4961
name: HD 93351 b
orbital period days: 2.4595
radius earth: 1.69
sys num planets: 2

About HD 93351 b

HD 93351 b is a rare exoplanet. It lies about 183.2 light-years from Earth, has an equilibrium temperature near 1,331 K, spans roughly 1.69 Earth radii and weighs about 3.5 Earth masses.

Its surface is likely an ocean of molten rock.

How to see it

Like any astronomical target, HD 93351 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 93351 b is a rare exoplanet

HD 93351 b scores 42 points on Spacedle's rarity scale, which places it in the rare tier. Another 4 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Super-Earth, Lava world, Eccentric orbit and Multi-planet system — 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.