Epic exoplanet 60 EP

HD 219828 c

RA 349.6947° · Dec 18.6458° · exoplanet

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Score breakdown

· 7 badges

60 pts · Epic

Epic 68 pts → Anomaly

Denser than iron +18
Long-period world +10
Eccentric orbit +9
Frozen world +8
Multi-planet system +6
Confirmed exoplanet +5
Gas giant +4

Total score 60

8 more points to reach Anomaly.

Badges

Confirmed exoplanet · +5
Gas giant · +4
Frozen world · +8
Long-period world · +10
Eccentric orbit · +9
Denser than iron · +18
Multi-planet system · +6

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. Hopelessly far for any craft humanity can build today.

Getting there

Aboard Voyager 1. ≈ 4.2 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 372.3 thousand years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 2385 years in a starship at a tenth of light speed.
Distance. 238 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 1788.

Saying hello

Say hello. A radio message and its reply would take 477 years round-trip.

Standing on it

A year here. A full year lasts about 13.1 Earth years.

By the numbers

Size. About 12.2× the width of Earth.
Volume. About 1816 Earths could fit inside it.
Mass. Roughly 5102× Earth's mass — about 16.1 Jupiters.
Your weight. You'd weigh about 34.3× your Earth weight standing here.
Density. Denser than solid iron.
Temperature. A frigid -124°C — colder than dry ice.

How we found it

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

Cosmic context

Crowded system. One of at least 2 planets orbiting its star.
Wild orbit. Its highly elliptical path swings between scorching and frozen each lap.

Properties

density gcc: 15.4
discovery facility: Multiple Facilities
discovery method: Radial Velocity
dist ly: 238.4657
eccentricity: 0.811
eq temp k: 149.17
insolation: 0.0822
mass earth: 5102.4172
name: HD 219828 c
orbital period days: 4789.873
radius earth: 12.2
sys num planets: 2

About HD 219828 c

HD 219828 c is an epic exoplanet. It lies about 238.5 light-years from Earth, has an equilibrium temperature near 149 K, spans roughly 12.2 Earth radii and weighs about 5,102.42 Earth masses.

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

How to see it

Like any astronomical target, HD 219828 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 HD 219828 c is an epic exoplanet

HD 219828 c scores 60 points on Spacedle's rarity scale, which places it in the epic tier. Another 8 points would lift it into a rarer tier.

That score comes from 7 science badges — Confirmed exoplanet, Gas giant, Frozen world, Long-period world, Eccentric orbit, Denser than iron and Multi-planet 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.