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Rare exoplanet 39 EP

WASP-150 b

RA 264.2630° · Dec 53.0213° · exoplanet

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Score breakdown

· 5 badges
39 pts · Rare
Rare 50 pts → Epic
  • Lava world +14
  • Tidally locked +10
  • Distant (over 1,000 light-years) +6
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 39

11 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • Gas giant · +4
  • Lava world · +14
  • Tidally locked · +10

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

  • Denser than iron. It is packed tighter than solid iron — whatever it is made of, it is not ordinary rock.

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. Denser than Earth — a solid world of rock and iron, with no meaningful atmosphere to speak of by mass.

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 12 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • 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 June — that's when to go looking.

Properties

density gcc
8.54
diameter km
152993.143
discovery facility
SuperWASP-North
discovery method
Transit
discovery year
2020
dist ly
1722.0874
eccentricity
0.3775
eq temp k
1460
host star teff
6218
inclination
84.01
insolation
854.7074
mag
12.026
mass earth
2688.8418
name
WASP-150 b
orbital period days
5.6442
radius earth
11.9936
semi major au
0.0694
spect
F8
sys num planets
1
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About WASP-150 b

WASP-150 b is a rare exoplanet. It lies about 1,722.1 light-years from Earth, shines at apparent magnitude 12.03, has spectral type F8 and has an equilibrium temperature near 1,460 K.

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

How to see it

At apparent magnitude 12.03, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, WASP-150 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 WASP-150 b is a rare exoplanet

WASP-150 b scores 39 points on Spacedle's rarity scale, which places it in the rare tier. Another 11 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Distant (over 1,000 light-years), Gas giant, Lava world and Tidally locked — 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.