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Epic exoplanet 69 EP

TOI-700 e

RA 97.0957° · Dec -65.5786° · exoplanet

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Score breakdown

· 6 badges
69 pts · Epic
Epic 78 pts → Anomaly
  • In the habitable zone +30
  • Earth-sized +16
  • Orbits a red dwarf +8
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Found by TESS +4
Total score 69

9 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • In the habitable zone · +30
  • Earth-sized · +16
  • Multi-planet system · +6
  • Found by TESS · +4
  • Orbits a red dwarf · +8

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.
  • Earth-sized. Genuinely comparable to Earth in size. Worlds in this narrow band are the ones every next-generation telescope is being pointed at.

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 4 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 13.2 it is far too faint for the eye: this one belongs to cameras and long exposures.

Properties

density gcc
5.19
diameter km
12156.6586
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
discovery year
2023
dist ly
101.5209
eccentricity
0.059
eq temp k
272.9
habitable zone
yes
host star teff
3459
inclination
89.6
insolation
1.27
mag
13.151
mass earth
0.818
name
TOI-700 e
orbital period days
27.8098
radius earth
0.953
semi major au
0.134
spect
M2.5 V
sys num planets
4
sys num stars
1

About TOI-700 e

TOI-700 e is an epic exoplanet. It lies about 101.5 light-years from Earth, shines at apparent magnitude 13.15, has spectral type M2.5 V and has an equilibrium temperature near 273 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 13.15, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, TOI-700 e 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-700 e is an epic exoplanet

TOI-700 e scores 69 points on Spacedle's rarity scale, which places it in the epic tier. Another 9 points would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, In the habitable zone, Earth-sized, Multi-planet system, Found by TESS and Orbits a red dwarf — 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.