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Epic exoplanet 67 EP

TOI-1431 b

RA 316.2037° · Dec 55.5880° · exoplanet

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Score breakdown

· 7 badges
67 pts · Epic
Epic 78 pts → Anomaly
  • Ultra-hot Jupiter +26
  • Orbits a hot blue-white star +14
  • Tidally locked +10
  • Confirmed exoplanet +5
  • Gas giant +4
  • Blasted by starlight +4
  • Found by TESS +4
Total score 67

11 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Ultra-hot Jupiter · +26
  • Tidally locked · +10
  • Blasted by starlight · +4
  • Found by TESS · +4
  • Orbits a hot blue-white star · +14

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.

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 8 it is just past naked-eye reach — ordinary binoculars will pull it in.
  • 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 August — that's when to go looking.

Could we get there?

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

Properties

density gcc
1.17
diameter km
213046.1594
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
discovery year
2021
dist ly
485.7278
eccentricity
0.0022
eq temp k
2370
host star teff
7690
inclination
80.13
insolation
5300
mag
8.03
mass earth
991.6246
name
TOI-1431 b
orbital period days
2.6502
radius earth
16.7014
semi major au
0.046
spect
Am C
sys num planets
1
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About TOI-1431 b

TOI-1431 b is an epic exoplanet. It lies about 485.7 light-years from Earth, shines at apparent magnitude 8.03, has spectral type Am C and has an equilibrium temperature near 2,370 K.

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 8.03, it is an easy target for binoculars.

Like any astronomical target, TOI-1431 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 TOI-1431 b is an epic exoplanet

TOI-1431 b scores 67 points on Spacedle's rarity scale, which places it in the epic tier. Another 11 points would lift it into a rarer tier.

That score comes from 7 science badges — Confirmed exoplanet, Gas giant, Ultra-hot Jupiter, Tidally locked, Blasted by starlight, Found by TESS and Orbits a hot blue-white star — 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.