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Epic exoplanet 50 EP

TOI-451 c

RA 62.9664° · Dec -37.9397° · exoplanet

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Score breakdown

· 7 badges
50 pts · Epic
Epic 78 pts → Anomaly
  • Two suns in its sky +12
  • Tidally locked +10
  • Orbits a Sun-like star +8
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Sub-Neptune +5
  • Found by TESS +4
Total score 50

28 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Sub-Neptune · +5
  • Tidally locked · +10
  • Multi-planet system · +6
  • Found by TESS · +4
  • Orbits a Sun-like star · +8
  • Two suns in its sky · +12

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 3 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. It rides the southern half of the sky — an easier target the further south you are.
  • Best time of year. It stands highest in the middle of the night around November — that's when to go looking.

Properties

density gcc
0.81
diameter km
37375.666
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
discovery year
2020
dist ly
403.5822
eccentricity
0
eq temp k
865
host star teff
5490
inclination
89.27
insolation
93
mag
10.939
mass earth
3.7
multi star system
yes
name
TOI-451 c
orbital period days
9.1925
radius earth
2.93
semi major au
0.0795
spect
G8 V
sys num planets
3
sys num stars
2
tidally locked
yes
tidally locked inferred
yes

About TOI-451 c

TOI-451 c is an epic exoplanet. It lies about 403.6 light-years from Earth, shines at apparent magnitude 10.94, has spectral type G8 V and has an equilibrium temperature near 865 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 10.94, a small backyard telescope will bring it into view.

Like any astronomical target, TOI-451 c 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-451 c is an epic exoplanet

TOI-451 c scores 50 points on Spacedle's rarity scale, which places it in the epic tier. Another 28 points would lift it into a rarer tier.

That score comes from 7 science badges — Confirmed exoplanet, Sub-Neptune, Tidally locked, Multi-planet system, Found by TESS, Orbits a Sun-like star 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.