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Epic exoplanet 63 EP

TOI-500 b

RA 106.5591° · Dec -47.5878° · exoplanet

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Score breakdown

· 7 badges
63 pts · Epic
Epic 78 pts → Anomaly
  • Earth-sized +16
  • Lava world +14
  • Ultra-short period +14
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Blasted by starlight +4
  • Found by TESS +4
Total score 63

15 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Earth-sized · +16
  • Lava world · +14
  • Ultra-short period · +14
  • Multi-planet system · +6
  • Blasted by starlight · +4
  • Found by TESS · +4

Trivia

What makes it special

  • Earth-sized. Genuinely comparable to Earth in size. Worlds in this narrow band are the ones every next-generation telescope is being pointed at.
  • Lava world. Its surface is almost certainly an ocean of molten rock, kept liquid by the star it hugs.

Hard to believe

  • A year in a day. Its entire year is over in 13.2 hours. Birthdays here would come round faster than meals.

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.
  • 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 10.5 you'll want a small backyard telescope.

Properties

density gcc
4.89
diameter km
14873.7292
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
discovery year
2022
dist ly
154.5732
eccentricity
0.063
eq temp k
1617
host star teff
4440
inclination
82.09
insolation
1138
mag
10.54
mass earth
1.42
name
TOI-500 b
orbital period days
0.5482
radius earth
1.166
semi major au
0.0119
spect
K6 V
sys num planets
4
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About TOI-500 b

TOI-500 b is an epic exoplanet. It lies about 154.6 light-years from Earth, shines at apparent magnitude 10.54, has spectral type K6 V and has an equilibrium temperature near 1,617 K.

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

How to see it

At apparent magnitude 10.54, a small backyard telescope will bring it into view.

Like any astronomical target, TOI-500 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-500 b is an epic exoplanet

TOI-500 b scores 63 points on Spacedle's rarity scale, which places it in the epic tier. Another 15 points would lift it into a rarer tier.

That score comes from 7 science badges — Confirmed exoplanet, Earth-sized, Lava world, Ultra-short period, Multi-planet system, Blasted by starlight 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.