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Rare exoplanet 37 EP

TOI-2525 b

RA 86.8510° · Dec -60.5213° · exoplanet

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Score breakdown

· 6 badges
37 pts · Rare
Rare 50 pts → Epic
  • Puffy low-density world +12
  • Distant (over 1,000 light-years) +6
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Gas giant +4
  • Found by TESS +4
Total score 37

13 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • Gas giant · +4
  • Puffy low-density world · +12
  • Multi-planet system · +6
  • 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

  • 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. Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.
  • 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 14.2 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 December — that's when to go looking.

Properties

density gcc
0.225
diameter km
110669.6157
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
discovery year
2023
dist ly
1289.6143
eccentricity
0.17
eq temp k
512.97
host star teff
5096
inclination
89.5
insolation
16.3643
mag
14.216
mass earth
26.6976
name
TOI-2525 b
orbital period days
23.2856
radius earth
8.6758
semi major au
0.1511
spect
K8 V
sys num planets
2
sys num stars
1

About TOI-2525 b

TOI-2525 b is a rare exoplanet. It lies about 1,289.6 light-years from Earth, shines at apparent magnitude 14.22, has spectral type K8 V and has an equilibrium temperature near 513 K.

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 14.22, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, TOI-2525 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-2525 b is a rare exoplanet

TOI-2525 b scores 37 points on Spacedle's rarity scale, which places it in the rare tier. Another 13 points would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, Distant (over 1,000 light-years), Gas giant, Puffy low-density world, 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.