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Rare exoplanet 49 EP

TOI-2322 b

RA 116.9731° · Dec -71.0020° · exoplanet

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Score breakdown

· 5 badges
49 pts · Rare
Rare 50 pts → Epic
  • Denser than iron +18
  • Earth-sized +16
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Found by TESS +4
Total score 49

1 more point to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Earth-sized · +16
  • Denser than iron · +18
  • Multi-planet system · +6
  • Found by TESS · +4

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 10.9 you'll want a small backyard telescope.
  • Southern sky only. So far south it never rises for most of the northern hemisphere. To see it you'd have to travel to Chile, South Africa or Australia.

Properties

density gcc
12.75
diameter km
12679.6628
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
discovery year
2025
dist ly
195.2402
eccentricity
0
eq temp k
603.1
host star teff
4664
inclination
89.57
insolation
22.04
mag
10.912
mass earth
2.31
name
TOI-2322 b
orbital period days
11.3072
radius earth
0.994
semi major au
0.0924
spect
K4
sys num planets
2
sys num stars
1

About TOI-2322 b

TOI-2322 b is a rare exoplanet. It lies about 195.2 light-years from Earth, shines at apparent magnitude 10.91, has spectral type K4 and has an equilibrium temperature near 603 K.

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 10.91, a small backyard telescope will bring it into view.

Like any astronomical target, TOI-2322 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-2322 b is a rare exoplanet

TOI-2322 b scores 49 points on Spacedle's rarity scale, which places it in the rare tier. Another 1 point would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Earth-sized, Denser than iron, Multi-planet system 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.