← Back to dex
Uncommon exoplanet 25 EP

TOI-4507 b

RA 80.4514° · Dec -69.9882° · 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
  • Puffy low-density world +12
  • Confirmed exoplanet +5
  • Gas giant +4
  • Found by TESS +4
Total score 25

9 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Puffy low-density world · +12
  • Found by TESS · +4

Trivia

Hard to believe

  • It would float. It is less dense than water. Drop it in a big enough ocean and the whole world would bob on the surface.

What it actually is

  • What it is made of. Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.

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 10.8 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.
  • Best time of year. It stands highest in the middle of the night around December — 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. ≈ 10.2 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
0.2
diameter km
104600.84
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
discovery year
2025
dist ly
581.4057
eccentricity
0.09
eq temp k
464.8
host star teff
6260
inclination
89.93
insolation
23.5778
mag
10.806
mass earth
20
name
TOI-4507 b
orbital period days
104.6161
radius earth
8.2
semi major au
0.456
spect
F
sys num planets
1
sys num stars
1

About TOI-4507 b

TOI-4507 b is an uncommon exoplanet. It lies about 581.4 light-years from Earth, shines at apparent magnitude 10.81, has spectral type F and has an equilibrium temperature near 465 K.

Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.

How to see it

At apparent magnitude 10.81, a small backyard telescope will bring it into view.

Like any astronomical target, TOI-4507 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-4507 b is an uncommon exoplanet

TOI-4507 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, Gas giant, Puffy low-density world 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.