Epic exoplanet 58 EP

GJ 887 d

RA 346.5028° · Dec -35.8473° · exoplanet

Loading sky survey…

🌌 View in 3D star map

Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 5 badges

58 pts · Epic

Epic 68 pts → Anomaly

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

Total score 58

10 more points to reach Anomaly.

Badges

Confirmed exoplanet · +5
In the habitable zone · +30
Sub-Neptune · +5
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. A multi-generation starship could one day attempt the crossing.

Getting there

Aboard Voyager 1. ≈ 188.4 thousand years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 16.7 thousand years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 107 years in a starship at a tenth of light speed.
Distance. 10.7 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 2015.

Saying hello

Say hello. A radio message and its reply would take 21.4 years round-trip.

Standing on it

A year here. A full year lasts just 50.8 Earth days.

By the numbers

Size. About 2.3× the width of Earth.
Volume. About 12.8 Earths could fit inside it.
Mass. About 6.1× the mass of Earth.
Your weight. You'd weigh about 1.1× your Earth weight standing here.
Temperature. A frigid -32°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: 2.62
discovery facility: Multiple Observatories
discovery method: Radial Velocity
dist ly: 10.7201
eq temp k: 241
habitable zone: yes
insolation: 0.81
mass earth: 6.1
name: GJ 887 d
orbital period days: 50.77
radius earth: 2.34
sys num planets: 4

About GJ 887 d

GJ 887 d is an epic exoplanet. It lies about 10.7 light-years from Earth, has an equilibrium temperature near 241 K, spans roughly 2.34 Earth radii and weighs about 6.1 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 887 d 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 887 d is an epic exoplanet

GJ 887 d scores 58 points on Spacedle's rarity scale, which places it in the epic tier. Another 10 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, In the habitable zone, Sub-Neptune, 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.