Epic exoplanet 51 EP

Kepler-407 c

RA 286.0363° · Dec 49.6145° · exoplanet

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Score breakdown

· 6 badges

51 pts · Epic

Epic 68 pts → Anomaly

Denser than iron +18
Distant (>1000 ly) +10
Frozen world +8
Multi-planet system +6
Confirmed exoplanet +5
Gas giant +4

Total score 51

17 more points to reach Anomaly.

Badges

Confirmed exoplanet · +5
Gas giant · +4
Frozen world · +8
Denser than iron · +18
Multi-planet system · +6
Distant (>1000 ly) · +10

Trivia

What makes it special

Frozen world. A deep-frozen world far from its star's warmth.
Heavyweight. Packed denser than solid iron.

Could we get there?

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

Getting there

Aboard Voyager 1. ≈ 19.4 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 1.7 million years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 11 thousand years in a starship at a tenth of light speed.
Distance. 1104 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 922.

Saying hello

Say hello. A radio message and its reply would take 2207 years round-trip.

Standing on it

A year here. A full year lasts about 8.2 Earth years.

By the numbers

Size. About 12.3× the width of Earth.
Volume. About 1861 Earths could fit inside it.
Mass. Roughly 4000× Earth's mass — about 12.6 Jupiters.
Your weight. You'd weigh about 26.4× your Earth weight standing here.
Density. Denser than solid iron.
Temperature. A frigid -126°C — colder than dry ice.

How we found it

Discovery. Found by W. M. Keck Observatory using the radial velocity method.

Cosmic context

Crowded system. One of at least 2 planets orbiting its star.

Properties

density gcc: 11.8
discovery facility: W. M. Keck Observatory
discovery method: Radial Velocity
dist ly: 1103.6075
eccentricity: 0.2215
eq temp k: 146.73
insolation: 0.0854
mass earth: 4000
name: Kepler-407 c
orbital period days: 3000
radius earth: 12.3
sys num planets: 2

About Kepler-407 c

Kepler-407 c is an epic exoplanet. It lies about 1,103.6 light-years from Earth, has an equilibrium temperature near 147 K, spans roughly 12.3 Earth radii and weighs about 4,000 Earth masses.

A deep-frozen world far from its star's warmth.

How to see it

Like any astronomical target, Kepler-407 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-407 c is an epic exoplanet

Kepler-407 c scores 51 points on Spacedle's rarity scale, which places it in the epic tier. Another 17 points would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, Gas giant, Frozen world, Denser than iron, Multi-planet system and Distant (>1000 ly) — 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.