Rare exoplanet 33 EP

Kepler-20 c

RA 287.6980° · Dec 42.3386° · exoplanet

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Score breakdown

· 5 badges

33 pts · Rare

Rare 46 pts → Epic

Richly packed system +14
Multi-planet system +6
Confirmed exoplanet +5
Sub-Neptune +5
Found by Kepler +3

Total score 33

13 more points to reach Epic.

Badges

Confirmed exoplanet · +5
Sub-Neptune · +5
Multi-planet system · +6
Richly packed system · +14
Found by Kepler · +3

Trivia

What makes it special

Packed system. Crammed into a system of five or more planets.

Could we get there?

Verdict. Hopelessly far for any craft humanity can build today.

Getting there

Aboard Voyager 1. ≈ 16.2 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 1.4 million years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 9216 years in a starship at a tenth of light speed.
Distance. 922 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 1104.

Saying hello

Say hello. A radio message and its reply would take 1843 years round-trip.

Standing on it

A year here. A full year lasts just 10.9 Earth days.

By the numbers

Size. About 2.9× the width of Earth.
Volume. About 24.2 Earths could fit inside it.
Mass. About 11.1× the mass of Earth.
Your weight. You'd weigh about 1.3× your Earth weight standing here.
Temperature. Around 555°C — hotter than a self-cleaning oven.

How we found it

Discovery. Found by Kepler using the transit method.

Cosmic context

Crowded system. One of at least 6 planets orbiting its star.

Properties

density gcc: 2.51
discovery facility: Kepler
discovery method: Transit
dist ly: 921.5962
eccentricity: 0.076
eq temp k: 828
insolation: 78.7
mass earth: 11.1
name: Kepler-20 c
orbital period days: 10.8541
radius earth: 2.894
sys num planets: 6

About Kepler-20 c

Kepler-20 c is a rare exoplanet. It lies about 921.6 light-years from Earth, has an equilibrium temperature near 828 K, spans roughly 2.89 Earth radii and weighs about 11.1 Earth masses.

Crammed into a system of five or more planets.

How to see it

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

Kepler-20 c scores 33 points on Spacedle's rarity scale, which places it in the rare tier. Another 13 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Sub-Neptune, Multi-planet system, Richly packed system and Found by Kepler — 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.