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Uncommon exoplanet 32 EP

TOI-2406 b

RA 8.8061° · Dec -3.3721° · exoplanet

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Score breakdown

· 5 badges
32 pts · Uncommon
Uncommon 34 pts → Rare
  • Tidally locked +10
  • Orbits a red dwarf +8
  • Confirmed exoplanet +5
  • Sub-Neptune +5
  • Found by TESS +4
Total score 32

2 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Sub-Neptune · +5
  • Tidally locked · +10
  • Found by TESS · +4
  • Orbits a red dwarf · +8

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.

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

  • Seen from everywhere. It sits almost on the celestial equator, so it can be seen from essentially anywhere on Earth.
  • Best time of year. It stands highest in the middle of the night around September — 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. ≈ 3.2 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 282.2 thousand years even at the Parker Solar Probe's 192 km/s.
  • At 10% light speed. ≈ 1808 years in a starship at a tenth of light speed.

Properties

diameter km
36482.732
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
discovery year
2021
dist ly
180.7524
eccentricity
0.17
eq temp k
449
host star teff
3100
inclination
89.8
insolation
6.69
mass earth
15.6
name
TOI-2406 b
orbital period days
3.0767
radius earth
2.86
semi major au
0.0227
spect
M4 V
sys num planets
1
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

Nearby objects

About TOI-2406 b

TOI-2406 b is an uncommon exoplanet. It lies about 180.8 light-years from Earth, has spectral type M4 V, has an equilibrium temperature near 449 K and spans roughly 2.86 Earth radii.

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

Like any astronomical target, TOI-2406 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-2406 b is an uncommon exoplanet

TOI-2406 b scores 32 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 2 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Sub-Neptune, Tidally locked, Found by TESS and Orbits a red dwarf — 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.