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Uncommon exoplanet 29 EP

K2-334 b

RA 136.4894° · Dec 16.3255° · exoplanet

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Score breakdown

· 4 badges
29 pts · Uncommon
Uncommon 34 pts → Rare
  • Lava world +14
  • Distant (over 1,000 light-years) +6
  • Confirmed exoplanet +5
  • Neptune-like +4
Total score 29

5 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • Neptune-like · +4
  • Lava world · +14

Trivia

What makes it special

  • Lava world. Its surface is almost certainly an ocean of molten rock, kept liquid by the star it hugs.

Hard to believe

  • It would float. It is less dense than water. Drop it in a big enough ocean and the whole world would bob on the surface.

What it actually is

  • Hugging its star. It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.
  • What it is made of. Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.

Sense of scale

  • In perspective. Far away by human standards, yet still a local address inside the Milky Way's spiral arms.

Find it in the sky

  • How to spot it. At magnitude 11.8 you'll want a small backyard telescope.
  • Northern sky. It rides the northern half of the sky — an easier target the further north you are.
  • Best time of year. It stands highest in the middle of the night around February — that's when to go looking.

Properties

density gcc
0.829
diameter km
72072.53
discovery facility
K2
discovery method
Transit
discovery year
2021
dist ly
1212.723
eq temp k
1380
host star teff
6502
inclination
88.58
insolation
832.2294
mag
11.842
mass earth
27.2
name
K2-334 b
orbital period days
5.114
radius earth
5.65
sys num planets
1
sys num stars
1

About K2-334 b

K2-334 b is an uncommon exoplanet. It lies about 1,212.7 light-years from Earth, shines at apparent magnitude 11.84, has an equilibrium temperature near 1,380 K and spans roughly 5.65 Earth radii.

Its surface is almost certainly an ocean of molten rock, kept liquid by the star it hugs.

How to see it

At apparent magnitude 11.84, a small backyard telescope will bring it into view.

Like any astronomical target, K2-334 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 K2-334 b is an uncommon exoplanet

K2-334 b scores 29 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 5 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Distant (over 1,000 light-years), Neptune-like and Lava world — 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.