Uncommon exoplanet 29 EP

Kepler-20 g

RA 287.6980° · Dec 42.3386° · exoplanet

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Score breakdown

· 4 badges

29 pts · Uncommon

Uncommon 33 pts → Rare

Richly packed system +14
Multi-planet system +6
Confirmed exoplanet +5
Neptune-like +4

Total score 29

4 more points to reach Rare.

Badges

Confirmed exoplanet · +5
Neptune-like · +4
Multi-planet system · +6
Richly packed system · +14

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 34.9 Earth days.

By the numbers

Size. About 4.7× the width of Earth.
Volume. About 104 Earths could fit inside it.
Mass. About 20× the mass of Earth.
Your weight. You'd weigh about 0.9× your Earth weight standing here.
Temperature. A scorching 251°C on average.

How we found it

Discovery. Found by Multiple Observatories using the radial velocity method.

Cosmic context

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

Properties

density gcc: 1.05
discovery facility: Multiple Observatories
discovery method: Radial Velocity
dist ly: 921.5962
eccentricity: 0.15
eq temp k: 524
insolation: 16.2132
mass earth: 19.96
name: Kepler-20 g
orbital period days: 34.94
radius earth: 4.71
sys num planets: 6

About Kepler-20 g

Kepler-20 g is an uncommon exoplanet. It lies about 921.6 light-years from Earth, has an equilibrium temperature near 524 K, spans roughly 4.71 Earth radii and weighs about 19.96 Earth masses.

Crammed into a system of five or more planets.

How to see it

Like any astronomical target, Kepler-20 g 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 g is an uncommon exoplanet

Kepler-20 g scores 29 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 4 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Neptune-like, Multi-planet system and Richly packed system — 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.