← Back to dex
Uncommon exoplanet 28 EP

GJ 3779 b

RA 200.7335° · Dec 24.4639° · exoplanet

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

Computing the sky for your location…

Score breakdown

· 4 badges
28 pts · Uncommon
Uncommon 34 pts → Rare
  • Tidally locked +10
  • Orbits a red dwarf +8
  • Confirmed exoplanet +5
  • Sub-Neptune +5
Total score 28

6 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Sub-Neptune · +5
  • Tidally locked · +10
  • Orbits a red dwarf · +8

Trivia

What it actually is

  • Hugging its star. It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.
  • What it is made of. Too light to be solid rock and too heavy to be all gas: most likely a deep global ocean or a thick steamy envelope over a rocky core.

Sense of scale

  • In perspective. Inside our stellar backyard: every radio broadcast humanity has ever made has already swept past it.

Find it in the sky

  • How to spot it. At magnitude 13 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • Northern sky. It rides the northern half of the sky — an easier target the further north you are.
  • Best time of year. It stands highest in the middle of the night around April — that's when to go looking.

Could we get there?

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

Getting there

  • Aboard Voyager 1. ≈ 787.7 thousand years at Voyager 1's speed (17 km/s).

Properties

density gcc
2.11
diameter km
35079.55
discovery facility
Calar Alto Observatory
discovery method
Radial Velocity
discovery year
2018
dist ly
44.8236
eccentricity
0.07
eq temp k
526.94
host star teff
3324
insolation
12.8254
mag
13.04
mass earth
8
name
GJ 3779 b
orbital period days
3.0232
radius earth
2.75
semi major au
0.026
spect
M4.0 V
sys num planets
1
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About GJ 3779 b

GJ 3779 b is an uncommon exoplanet. It lies about 44.8 light-years from Earth, shines at apparent magnitude 13.04, has spectral type M4.0 V and has an equilibrium temperature near 527 K.

It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.

How to see it

At apparent magnitude 13.04, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, GJ 3779 b 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 3779 b is an uncommon exoplanet

GJ 3779 b scores 28 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 6 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Sub-Neptune, Tidally locked and Orbits a red dwarf — 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.