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Rare exoplanet 36 EP

TOI-912 b

RA 229.3286° · Dec -80.4733° · exoplanet

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Score breakdown

· 5 badges
36 pts · Rare
Rare 50 pts → Epic
  • Tidally locked +10
  • Eccentric orbit +9
  • Super-Earth +8
  • Confirmed exoplanet +5
  • Found by TESS +4
Total score 36

14 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Super-Earth · +8
  • Eccentric orbit · +9
  • Tidally locked · +10
  • 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. Its density says rock, though lighter than Earth's mix: probably less iron, or a thick shell of water and ice over the top.

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 12.7 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • Southern sky only. So far south it never rises for most of the northern hemisphere. To see it you'd have to travel to Chile, South Africa or Australia.
  • Best time of year. It stands highest in the middle of the night around May — 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. ≈ 1.5 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
4
diameter km
24619.466
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
discovery year
2025
dist ly
85.1502
eccentricity
0.58
eq temp k
551
host star teff
3572
inclination
88.7
insolation
15
mag
12.67
mass earth
5.1
name
TOI-912 b
orbital period days
4.6781
radius earth
1.93
semi major au
0.041
spect
M3
sys num planets
1
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About TOI-912 b

TOI-912 b is a rare exoplanet. It lies about 85.2 light-years from Earth, shines at apparent magnitude 12.67, has spectral type M3 and has an equilibrium temperature near 551 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 12.67, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, TOI-912 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-912 b is a rare exoplanet

TOI-912 b scores 36 points on Spacedle's rarity scale, which places it in the rare tier. Another 14 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Super-Earth, Eccentric orbit, Tidally locked 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.