← Back to dex
Uncommon exoplanet 28 EP

TOI-5380 b

RA 112.7611° · Dec 73.1288° · exoplanet

Loading sky survey…
🌌 View in 3D star map
Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 4 badges
28 pts · Uncommon
Uncommon 34 pts → Rare
  • Lava world +14
  • Confirmed exoplanet +5
  • Sub-Neptune +5
  • Found by TESS +4
Total score 28

6 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Sub-Neptune · +5
  • Lava world · +14
  • Found by TESS · +4

Trivia

What makes it special

  • Lava world. Its surface is almost certainly an ocean of molten rock, kept liquid by the star it hugs.

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 10.6 you'll want a small backyard telescope.
  • Never sets. So far north that from Britain, Canada or northern Europe it never dips below the horizon — it is up every clear night of the year.
  • Best time of year. It stands highest in the middle of the night around January — that's when to go looking.

Could we get there?

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

Properties

density gcc
1.55
diameter km
44403.4696
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
discovery year
2026
dist ly
935.3534
eq temp k
1479
host star teff
6400.78
inclination
85.8282
insolation
796.305
mag
10.621
mass earth
11.9
name
TOI-5380 b
orbital period days
3.7723
radius earth
3.4809
sys num planets
1
sys num stars
1

About TOI-5380 b

TOI-5380 b is an uncommon exoplanet. It lies about 935.4 light-years from Earth, shines at apparent magnitude 10.62, has an equilibrium temperature near 1,479 K and spans roughly 3.48 Earth radii.

Its surface is almost certainly an ocean of molten rock, kept liquid by the star it hugs.

How to see it

At apparent magnitude 10.62, a small backyard telescope will bring it into view.

Like any astronomical target, TOI-5380 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-5380 b is an uncommon exoplanet

TOI-5380 b scores 28 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 6 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Sub-Neptune, Lava world 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.