← Back to dex
Epic exoplanet 69 EP

CoRoT-7 b

RA 100.9562° · Dec -1.0630° · exoplanet

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

Computing the sky for your location…

Score breakdown

· 7 badges
69 pts · Epic
Epic 78 pts → Anomaly
  • Denser than iron +18
  • Lava world +14
  • Ultra-short period +14
  • Super-Earth +8
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Blasted by starlight +4
Total score 69

9 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Super-Earth · +8
  • Lava world · +14
  • Ultra-short period · +14
  • Denser than iron · +18
  • Multi-planet system · +6
  • Blasted by starlight · +4

Trivia

What makes it special

  • Lava world. Its surface is almost certainly an ocean of molten rock, kept liquid by the star it hugs.

Hard to believe

  • Denser than iron. It is packed tighter than solid iron — whatever it is made of, it is not ordinary rock.
  • A year in a day. Its entire year is over in 20.5 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. Denser than Earth — a solid world of rock and iron, with no meaningful atmosphere to speak of by mass.
  • 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 11.7 you'll want a small backyard telescope.

Properties

density gcc
9.355
diameter km
21447.6369
discovery facility
CoRoT
discovery method
Transit
discovery year
2009
dist ly
521.543
eccentricity
0
eq temp k
1756
host star teff
5275
inclination
80.1
insolation
1773.7952
mag
11.728
mass earth
4.0766
name
CoRoT-7 b
orbital period days
0.8536
radius earth
1.6813
semi major au
0.017
spect
G9 V
sys num planets
3
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About CoRoT-7 b

CoRoT-7 b is an epic exoplanet. It lies about 521.5 light-years from Earth, shines at apparent magnitude 11.73, has spectral type G9 V and has an equilibrium temperature near 1,756 K.

Its surface is almost certainly an ocean of molten rock, kept liquid by the star it hugs.

How to see it

At apparent magnitude 11.73, a small backyard telescope will bring it into view.

Like any astronomical target, CoRoT-7 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 CoRoT-7 b is an epic exoplanet

CoRoT-7 b 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 7 science badges — Confirmed exoplanet, Super-Earth, Lava world, Ultra-short period, Denser than iron, Multi-planet system and Blasted by starlight — 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.