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Rare exoplanet 33 EP

TOI-1136 d

RA 192.1849° · Dec 64.8553° · exoplanet

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Score breakdown

· 5 badges
33 pts · Rare
Rare 46 pts → Epic
  • Richly packed system +14
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Neptune-like +4
  • Found by TESS +4
Total score 33

13 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Neptune-like · +4
  • Multi-planet system · +6
  • Richly packed system · +14
  • Found by TESS · +4

Trivia

What makes it special

  • Packed system. Crammed into a system of five or more planets.

Could we get there?

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

Getting there

  • Aboard Voyager 1. ≈ 4.8 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 430.5 thousand years even at the Parker Solar Probe's 192 km/s.
  • At 10% light speed. ≈ 2757 years in a starship at a tenth of light speed.
  • Distance. 276 light-years from Earth.

Look-back time

  • Look-back time. The light you'd see left around the year 1750.

Saying hello

  • Say hello. A radio message and its reply would take 551 years round-trip.

Standing on it

  • A year here. A full year lasts just 12.5 Earth days.

By the numbers

  • Size. About 4.6× the width of Earth.
  • Volume. About 99.1 Earths could fit inside it.
  • Mass. About 8.3× the mass of Earth.
  • Your weight. You'd weigh about 0.4× your Earth weight standing here.
  • Temperature. Around 570°C — hotter than a self-cleaning oven.

How we found it

  • Discovery. Found by Transiting Exoplanet Survey Satellite (TESS) using the transit method.

Cosmic context

  • Crowded system. One of at least 6 planets orbiting its star.

Properties

density gcc
1.81
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
dist ly
275.7199
eccentricity
0.042
eq temp k
843
insolation
626.362
mass earth
8.35
name
TOI-1136 d
orbital period days
12.5199
radius earth
4.627
sys num planets
6

About TOI-1136 d

TOI-1136 d is a rare exoplanet. It lies about 275.7 light-years from Earth, has an equilibrium temperature near 843 K, spans roughly 4.63 Earth radii and weighs about 8.35 Earth masses.

Crammed into a system of five or more planets.

How to see it

Like any astronomical target, TOI-1136 d 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-1136 d is a rare exoplanet

TOI-1136 d scores 33 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 5 science badges — Confirmed exoplanet, Neptune-like, Multi-planet system, Richly packed 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.

spacedle A daily roll through the real universe. © 2026 spacedle. Buy me a coffee

Sky imagery and survey data courtesy of Aladin Lite & CDS, Strasbourg. Object data from the NASA Exoplanet Archive, JPL Small-Body Database, and the ATNF Pulsar Catalogue.