← Back to dex
Rare exoplanet 38 EP

CoRoT-20 c

RA 97.7204° · Dec 0.2269° · exoplanet

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

Computing the sky for your location…

Score breakdown

· 6 badges
38 pts · Rare
Rare 50 pts → Epic
  • Eccentric orbit +9
  • Orbits a Sun-like star +8
  • Distant (over 1,000 light-years) +6
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 38

12 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • Gas giant · +4
  • Eccentric orbit · +9
  • Multi-planet system · +6
  • Orbits a Sun-like star · +8

Trivia

Hard to believe

  • Denser than iron. It is packed tighter than solid iron — whatever it is made of, it is not ordinary rock.

What it actually is

  • 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 2 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 14.6 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • Seen from everywhere. It sits almost on the celestial equator, so it can be seen from essentially anywhere on Earth.
  • Best time of year. It stands highest in the middle of the night around December — that's when to go looking.

Could we get there?

  • Verdict. Impossible with our current technology — and the next millennium of it.

Properties

density gcc
16.4
diameter km
155625.64
discovery facility
Multiple Observatories
discovery method
Radial Velocity
discovery year
2018
dist ly
2752.9556
eccentricity
0.6
eq temp k
168.16
host star teff
5880
insolation
0.1759
mag
14.63
mass earth
5403.11
name
CoRoT-20 c
orbital period days
1675
radius earth
12.2
semi major au
2.9
spect
G2 V
sys num planets
2
sys num stars
1

About CoRoT-20 c

CoRoT-20 c is a rare exoplanet. It lies about 2,753 light-years from Earth, shines at apparent magnitude 14.63, has spectral type G2 V and has an equilibrium temperature near 168 K.

Denser than Earth — a solid world of rock and iron, with no meaningful atmosphere to speak of by mass.

How to see it

At apparent magnitude 14.63, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, CoRoT-20 c 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-20 c is a rare exoplanet

CoRoT-20 c scores 38 points on Spacedle's rarity scale, which places it in the rare tier. Another 12 points would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, Distant (over 1,000 light-years), Gas giant, Eccentric orbit, Multi-planet system and Orbits a Sun-like star — 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.