← Back to dex
Epic exoplanet 53 EP

TOI-1266 d

RA 197.9966° · Dec 65.8337° · exoplanet

Loading sky survey…
🌌 View in 3D star map
Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 5 badges
53 pts · Epic
Epic 78 pts → Anomaly
  • In the habitable zone +30
  • Super-Earth +8
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Found by TESS +4
Total score 53

25 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • In the habitable zone · +30
  • Super-Earth · +8
  • Multi-planet system · +6
  • Found by TESS · +4

Trivia

What makes it special

  • Goldilocks zone. Sits where it's neither too hot nor too cold — liquid water could exist on a surface here.

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.
  • What the zone means. The habitable zone is only about temperature: it is the band where liquid water could survive on a surface. It is a promising address, not evidence of anything living.
  • 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 12.9 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • Never sets. So far north that from Britain, Canada or northern Europe it never dips below the horizon — it is up every clear night of the year.

Properties

density gcc
3.84
diameter km
22195.788
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit Timing Variations
discovery year
2025
dist ly
117.4546
eccentricity
0.087
eq temp k
288
habitable zone
yes
host star teff
3563
insolation
1.3
mag
12.941
mass earth
3.68
name
TOI-1266 d
orbital period days
32.509
radius earth
1.74
semi major au
0.1513
spect
M2
sys num planets
3
sys num stars
1

About TOI-1266 d

TOI-1266 d is an epic exoplanet. It lies about 117.5 light-years from Earth, shines at apparent magnitude 12.94, has spectral type M2 and has an equilibrium temperature near 288 K.

Sits where it's neither too hot nor too cold — liquid water could exist on a surface here.

How to see it

At apparent magnitude 12.94, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, TOI-1266 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-1266 d is an epic exoplanet

TOI-1266 d scores 53 points on Spacedle's rarity scale, which places it in the epic tier. Another 25 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, In the habitable zone, Super-Earth, 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.