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Epic exoplanet 61 EP

TOI-1453 b

RA 258.2233° · Dec 57.1978° · exoplanet

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Score breakdown

· 6 badges
61 pts · Epic
Epic 78 pts → Anomaly
  • Denser than iron +18
  • Earth-sized +16
  • Two suns in its sky +12
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Found by TESS +4
Total score 61

17 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Earth-sized · +16
  • Denser than iron · +18
  • Multi-planet system · +6
  • Found by TESS · +4
  • Two suns in its sky · +12

Trivia

What makes it special

  • Earth-sized. Genuinely comparable to Earth in size. Worlds in this narrow band are the ones every next-generation telescope is being pointed at.

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.
  • 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 11.1 you'll want a small backyard telescope.
  • Northern sky. It rides the northern half of the sky — an easier target the further north you are.

Properties

density gcc
8.2153
diameter km
14963.0226
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
discovery year
2025
dist ly
256.8201
eccentricity
0
eq temp k
944.2
host star teff
4975
inclination
87.65
insolation
132.6
mag
11.113
mass earth
2.32
multi star system
yes
name
TOI-1453 b
orbital period days
4.3135
radius earth
1.173
sys num planets
2
sys num stars
2

About TOI-1453 b

TOI-1453 b is an epic exoplanet. It lies about 256.8 light-years from Earth, shines at apparent magnitude 11.11, has an equilibrium temperature near 944 K and spans roughly 1.17 Earth radii.

Genuinely comparable to Earth in size. Worlds in this narrow band are the ones every next-generation telescope is being pointed at.

How to see it

At apparent magnitude 11.11, a small backyard telescope will bring it into view.

Like any astronomical target, TOI-1453 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-1453 b is an epic exoplanet

TOI-1453 b scores 61 points on Spacedle's rarity scale, which places it in the epic tier. Another 17 points would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, Earth-sized, Denser than iron, Multi-planet system, Found by TESS and Two suns in its sky — 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.