← Back to dex
Uncommon exoplanet 25 EP

TOI-4561 b

RA 60.9619° · Dec -76.0215° · exoplanet

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

Computing the sky for your location…

Score breakdown

· 4 badges
25 pts · Uncommon
Uncommon 34 pts → Rare
  • Super-Earth +8
  • Orbits a Sun-like star +8
  • Confirmed exoplanet +5
  • Found by TESS +4
Total score 25

9 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Super-Earth · +8
  • Found by TESS · +4
  • Orbits a Sun-like star · +8

Trivia

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.

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 12.2 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • 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.
  • Best time of year. It stands highest in the middle of the night around November — that's when to go looking.

Could we get there?

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

Getting there

  • Aboard Voyager 1. ≈ 10.3 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
3.73
diameter km
22679.1477
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
discovery year
2026
dist ly
583.8453
eq temp k
789.81
host star teff
5537.93
inclination
88.8782
insolation
91.9624
mag
12.153
mass earth
3.81
name
TOI-4561 b
orbital period days
8.9355
radius earth
1.7779
sys num planets
1
sys num stars
1

About TOI-4561 b

TOI-4561 b is an uncommon exoplanet. It lies about 583.8 light-years from Earth, shines at apparent magnitude 12.15, has an equilibrium temperature near 790 K and spans roughly 1.78 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 12.15, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, TOI-4561 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-4561 b is an uncommon exoplanet

TOI-4561 b scores 25 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 9 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Super-Earth, Found by TESS and Orbits a Sun-like star — 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.