Epic exoplanet 57 EP

GJ 876 c

RA 343.3240° · Dec -14.2666° · exoplanet

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Score breakdown

· 5 badges

57 pts · Epic

Epic 68 pts → Anomaly

In the habitable zone +30
Nearby (<25 ly) +12
Multi-planet system +6
Confirmed exoplanet +5
Gas giant +4

Total score 57

11 more points to reach Anomaly.

Badges

Confirmed exoplanet · +5
In the habitable zone · +30
Gas giant · +4
Multi-planet system · +6
Nearby (<25 ly) · +12

Trivia

What makes it special

Goldilocks zone. Sits where it's neither too hot nor too cold — liquid water could exist.

Could we get there?

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

Getting there

Aboard Voyager 1. ≈ 268 thousand years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 23.8 thousand years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 152 years in a starship at a tenth of light speed.
Distance. 15.2 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 2011.

Saying hello

Say hello. A radio message and its reply would take 30.5 years round-trip.

Standing on it

A year here. A full year lasts just 30.1 Earth days.

By the numbers

Size. About 14× the width of Earth.
Volume. About 2744 Earths could fit inside it.
Mass. Roughly 227× Earth's mass — about 0.7 Jupiters.
Your weight. You'd weigh about 1.2× your Earth weight standing here.
Density. Less dense than water — drop it in a big enough ocean and it would float.
Temperature. A frigid -31°C — colder than dry ice.

How we found it

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

Cosmic context

Crowded system. One of at least 4 planets orbiting its star.

Properties

density gcc: 0.455
discovery facility: Multiple Observatories
discovery method: Radial Velocity
dist ly: 15.2483
eccentricity: 0.2559
eq temp k: 241.66
habitable zone: yes
insolation: 0.7384
mass earth: 226.9846
name: GJ 876 c
orbital period days: 30.0881
radius earth: 14
sys num planets: 4

About GJ 876 c

GJ 876 c is an epic exoplanet. It lies about 15.2 light-years from Earth, has an equilibrium temperature near 242 K, spans roughly 14 Earth radii and weighs about 226.98 Earth masses.

Sits where it's neither too hot nor too cold — liquid water could exist.

How to see it

Like any astronomical target, GJ 876 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 GJ 876 c is an epic exoplanet

GJ 876 c scores 57 points on Spacedle's rarity scale, which places it in the epic tier. Another 11 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, In the habitable zone, Gas giant, Multi-planet system and Nearby (<25 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.