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Trash exoplanet 14 EP

TOI-1231 b

RA 156.7473° · Dec -52.4679° · exoplanet

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Score breakdown

· 3 badges
14 pts · Trash
Trash 15 pts → Common
  • Confirmed exoplanet +5
  • Sub-Neptune +5
  • Found by TESS +4
Total score 14

1 more point to reach Common.

Badges

  • Confirmed exoplanet · +5
  • Sub-Neptune · +5
  • Found by TESS · +4

Trivia

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. Too light to be solid rock and too heavy to be all gas: most likely a deep global ocean or a thick steamy envelope over a rocky core.

Sense of scale

  • In perspective. Inside our stellar backyard: every radio broadcast humanity has ever made has already swept past it.

Find it in the sky

  • How to spot it. At magnitude 12.4 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • Southern sky. It rides the southern half of the sky — an easier target the further south you are.
  • Best time of year. It stands highest in the middle of the night around February — that's when to go looking.

Could we get there?

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

Getting there

  • Aboard Voyager 1. ≈ 1.6 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
1.74
diameter km
46560.13
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
discovery year
2021
dist ly
90.0931
eccentricity
0.087
eq temp k
329.6
host star teff
3553
inclination
89.73
insolation
1.93
mag
12.36
mass earth
15.4
name
TOI-1231 b
orbital period days
24.2456
radius earth
3.65
semi major au
0.1288
spect
M3 V
sys num planets
1
sys num stars
1

About TOI-1231 b

TOI-1231 b is a trash exoplanet. It lies about 90.1 light-years from Earth, shines at apparent magnitude 12.36, has spectral type M3 V and has an equilibrium temperature near 330 K.

It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.

How to see it

At apparent magnitude 12.36, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, TOI-1231 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-1231 b is a trash exoplanet

TOI-1231 b scores 14 points on Spacedle's rarity scale, which places it in the trash tier. Another 1 point would lift it into a rarer tier.

That score comes from 3 science badges — Confirmed exoplanet, Sub-Neptune and Found by TESS — 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.