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Rare exoplanet 48 EP

TOI-1408 c

RA 313.5110° · Dec 72.5806° · exoplanet

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Score breakdown

· 7 badges
48 pts · Rare
Rare 50 pts → Epic
  • Lava world +14
  • Tidally locked +10
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Sub-Neptune +5
  • Blasted by starlight +4
  • Found by TESS +4
Total score 48

2 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Sub-Neptune · +5
  • Lava world · +14
  • Tidally locked · +10
  • Multi-planet system · +6
  • Blasted by starlight · +4
  • 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. Its density says rock, though lighter than Earth's mix: probably less iron, or a thick shell of water and ice over the top.
  • Crowded system. One of at least 2 planets orbiting its star.

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 9.3 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 August — that's when to go looking.

Properties

density gcc
3.8
diameter km
28318.764
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit Timing Variations
discovery year
2024
dist ly
454.9354
eccentricity
0.1353
eq temp k
1864
host star teff
6117
inclination
82.6
insolation
2005.35
mag
9.27
mass earth
7.6
name
TOI-1408 c
orbital period days
2.1664
radius earth
2.22
semi major au
0.0359
spect
F8 V
sys num planets
2
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About TOI-1408 c

TOI-1408 c is a rare exoplanet. It lies about 454.9 light-years from Earth, shines at apparent magnitude 9.27, has spectral type F8 V and has an equilibrium temperature near 1,864 K.

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

How to see it

At apparent magnitude 9.27, a small backyard telescope will bring it into view.

Like any astronomical target, TOI-1408 c 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-1408 c is a rare exoplanet

TOI-1408 c scores 48 points on Spacedle's rarity scale, which places it in the rare tier. Another 2 points would lift it into a rarer tier.

That score comes from 7 science badges — Confirmed exoplanet, Sub-Neptune, Lava world, Tidally locked, Multi-planet system, Blasted by starlight 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.