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Anomaly exoplanet 79 EP

WASP-12 b

RA 97.6366° · Dec 29.6723° · exoplanet

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Score breakdown

· 8 badges
79 pts · Anomaly
Anomaly 120 pts → Mythic
  • Ultra-hot Jupiter +26
  • Puffy low-density world +12
  • Two suns in its sky +12
  • Tidally locked +10
  • Distant (over 1,000 light-years) +6
  • Confirmed exoplanet +5
  • Gas giant +4
  • Blasted by starlight +4
Total score 79

41 more points to reach Mythic.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • Gas giant · +4
  • Ultra-hot Jupiter · +26
  • Tidally locked · +10
  • Puffy low-density world · +12
  • Blasted by starlight · +4
  • Two suns in its sky · +12

Trivia

What makes it special

  • Ultra-hot Jupiter. So hot that iron vaporises on the dayside, blows around to the night side and rains back down as molten metal.

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 11.6 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 December — that's when to go looking.

Properties

density gcc
0.266
diameter km
280963.5593
discovery facility
SuperWASP
discovery method
Transit
discovery year
2008
dist ly
1393.4885
eccentricity
0.0447
eq temp k
2601
host star teff
6265
inclination
81.8
insolation
8220.584
mag
11.569
mass earth
467.2101
multi star system
yes
name
WASP-12 b
orbital period days
1.0914
radius earth
22.0256
semi major au
0.0234
sys num planets
1
sys num stars
3
tidally locked
yes
tidally locked inferred
yes

About WASP-12 b

WASP-12 b is an anomaly exoplanet. It lies about 1,393.5 light-years from Earth, shines at apparent magnitude 11.57, has an equilibrium temperature near 2,601 K and spans roughly 22.03 Earth radii.

So hot that iron vaporises on the dayside, blows around to the night side and rains back down as molten metal.

How to see it

At apparent magnitude 11.57, a small backyard telescope will bring it into view.

Like any astronomical target, WASP-12 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-12 b is an anomaly exoplanet

WASP-12 b scores 79 points on Spacedle's rarity scale, which places it in the anomaly tier. Another 41 points would lift it into a rarer tier.

That score comes from 8 science badges — Confirmed exoplanet, Distant (over 1,000 light-years), Gas giant, Ultra-hot Jupiter, Tidally locked, Puffy low-density world, Blasted by starlight and Two suns in its sky — 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.