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Epic exoplanet 58 EP

CoRoT-20 b

RA 97.7204° · Dec 0.2269° · exoplanet

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Score breakdown

· 8 badges
58 pts · Epic
Epic 78 pts → Anomaly
  • Hot Jupiter +10
  • Tidally locked +10
  • 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 58

20 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • Gas giant · +4
  • Hot Jupiter · +10
  • Eccentric orbit · +9
  • Tidally locked · +10
  • 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

  • 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 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.

Properties

density gcc
8.87
diameter km
120106.7665
discovery facility
CoRoT
discovery method
Transit
discovery year
2011
dist ly
2752.9556
eccentricity
0.59
eq temp k
1024
host star teff
5880
inclination
88.21
insolation
180.8704
mag
14.63
mass earth
1366.669
name
CoRoT-20 b
orbital period days
9.2429
radius earth
9.4156
semi major au
0.09
spect
G2 V
sys num planets
2
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About CoRoT-20 b

CoRoT-20 b is an epic 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 1,024 K.

It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.

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 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-20 b is an epic exoplanet

CoRoT-20 b scores 58 points on Spacedle's rarity scale, which places it in the epic tier. Another 20 points would lift it into a rarer tier.

That score comes from 8 science badges — Confirmed exoplanet, Distant (over 1,000 light-years), Gas giant, Hot Jupiter, Eccentric orbit, Tidally locked, 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.