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Rare exoplanet 42 EP

TOI-1174 b

RA 209.2172° · Dec 68.6182° · exoplanet

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Score breakdown

· 5 badges
42 pts · Rare
Rare 50 pts → Epic
  • Denser than iron +18
  • Tidally locked +10
  • Confirmed exoplanet +5
  • Sub-Neptune +5
  • Found by TESS +4
Total score 42

8 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Sub-Neptune · +5
  • Tidally locked · +10
  • Denser than iron · +18
  • Found by TESS · +4

Trivia

Hard to believe

  • Denser than iron. It is packed tighter than solid iron — whatever it is made of, it is not ordinary rock.

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. Denser than Earth — a solid world of rock and iron, with no meaningful atmosphere to speak of by mass.

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 11 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 April — that's when to go looking.

Could we get there?

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

Properties

density gcc
11
diameter km
32681.3844
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
discovery year
2024
dist ly
308.6659
eccentricity
0
eq temp k
713.83
host star teff
5030
insolation
52.02
mag
10.964
mass earth
32
name
TOI-1174 b
orbital period days
8.9535
radius earth
2.562
semi major au
0.0799
sys num planets
1
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About TOI-1174 b

TOI-1174 b is a rare exoplanet. It lies about 308.7 light-years from Earth, shines at apparent magnitude 10.96, has an equilibrium temperature near 714 K and spans roughly 2.56 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

At apparent magnitude 10.96, a small backyard telescope will bring it into view.

Like any astronomical target, TOI-1174 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-1174 b is a rare exoplanet

TOI-1174 b scores 42 points on Spacedle's rarity scale, which places it in the rare tier. Another 8 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Sub-Neptune, Tidally locked, Denser than iron 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.