← Back to dex
Epic exoplanet 46 EP

GJ 163 c

RA 62.3228° · Dec -53.3712° · exoplanet

Loading sky survey…
🌌 View in 3D star map
Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 4 badges
46 pts · Epic
Epic 68 pts → Anomaly
  • In the habitable zone +30
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Sub-Neptune +5
Total score 46

22 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • In the habitable zone · +30
  • Sub-Neptune · +5
  • Multi-planet system · +6

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. ≈ 867.1 thousand years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 77 thousand years even at the Parker Solar Probe's 192 km/s.
  • At 10% light speed. ≈ 493 years in a starship at a tenth of light speed.
  • Distance. 49.3 light-years from Earth.

Look-back time

  • Look-back time. The light you'd see left around the year 1977.

Saying hello

  • Say hello. A radio message and its reply would take 98.7 years round-trip.

Standing on it

  • A year here. A full year lasts just 25.6 Earth days.

By the numbers

  • Size. About 2.5× the width of Earth.
  • Volume. About 15.6 Earths could fit inside it.
  • Mass. About 6.8× the mass of Earth.
  • Your weight. You'd weigh about 1.1× your Earth weight standing here.
  • Temperature. A surprisingly temperate 32°C average.

How we found it

  • Discovery. Found by La Silla Observatory using the radial velocity method.

Cosmic context

  • Crowded system. One of at least 3 planets orbiting its star.

Properties

density gcc
2.39
discovery facility
La Silla Observatory
discovery method
Radial Velocity
dist ly
49.3425
eccentricity
0.099
eq temp k
305.07
habitable zone
yes
insolation
1.2457
mass earth
6.8
name
GJ 163 c
orbital period days
25.6306
radius earth
2.5
sys num planets
3

About GJ 163 c

GJ 163 c is an epic exoplanet. It lies about 49.3 light-years from Earth, has an equilibrium temperature near 305 K, spans roughly 2.5 Earth radii and weighs about 6.8 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 163 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 163 c is an epic exoplanet

GJ 163 c scores 46 points on Spacedle's rarity scale, which places it in the epic tier. Another 22 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, In the habitable zone, Sub-Neptune 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.

spacedle A daily roll through the real universe. © 2026 spacedle. Buy me a coffee

Sky imagery and survey data courtesy of Aladin Lite & CDS, Strasbourg. Object data from the NASA Exoplanet Archive, JPL Small-Body Database, and the ATNF Pulsar Catalogue.