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Rare exoplanet 35 EP

TOI-733 b

RA 159.4093° · Dec -40.8883° · exoplanet

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Score breakdown

· 5 badges
35 pts · Rare
Rare 50 pts → Epic
  • Tidally locked +10
  • Super-Earth +8
  • Orbits a Sun-like star +8
  • Confirmed exoplanet +5
  • Found by TESS +4
Total score 35

15 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Super-Earth · +8
  • Tidally locked · +10
  • 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 9.4 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 February — 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. ≈ 4.3 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
3.98
diameter km
25410.3504
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
discovery year
2023
dist ly
245.2993
eccentricity
0.046
eq temp k
1055.8
host star teff
5585
inclination
88.85
insolation
207.1
mag
9.44
mass earth
5.72
name
TOI-733 b
orbital period days
4.8848
radius earth
1.992
semi major au
0.0618
spect
G
sys num planets
1
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About TOI-733 b

TOI-733 b is a rare exoplanet. It lies about 245.3 light-years from Earth, shines at apparent magnitude 9.44, has spectral type G and has an equilibrium temperature near 1,056 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 9.44, a small backyard telescope will bring it into view.

Like any astronomical target, TOI-733 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-733 b is a rare exoplanet

TOI-733 b scores 35 points on Spacedle's rarity scale, which places it in the rare tier. Another 15 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Super-Earth, Tidally locked, 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.