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Uncommon exoplanet 31 EP

GJ 3222 b

RA 50.8972° · Dec -40.0762° · exoplanet

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Score breakdown

· 4 badges
31 pts · Uncommon
Uncommon 34 pts → Rare
  • Two suns in its sky +12
  • Eccentric orbit +9
  • Confirmed exoplanet +5
  • Sub-Neptune +5
Total score 31

3 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Sub-Neptune · +5
  • Eccentric orbit · +9
  • Two suns in its sky · +12

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. Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.

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 6.9 it is just past naked-eye reach — ordinary binoculars will pull it in.
  • Southern sky. It rides the southern half of the sky — an easier target the further south you are.
  • Best time of year. It stands highest in the middle of the night around November — 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. ≈ 1 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
1.6
diameter km
43371.08
discovery facility
Multiple Observatories
discovery method
Radial Velocity
discovery year
2022
dist ly
59.4849
eccentricity
0.929
eq temp k
811.06
host star teff
5257.46
insolation
67.5954
mag
6.9
mass earth
11.4418
multi star system
yes
name
GJ 3222 b
orbital period days
10.6667
radius earth
3.4
semi major au
0.091
spect
K0V
sys num planets
1
sys num stars
2

About GJ 3222 b

GJ 3222 b is an uncommon exoplanet. It lies about 59.5 light-years from Earth, shines at apparent magnitude 6.9, has spectral type K0V and has an equilibrium temperature near 811 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 6.9, it is an easy target for binoculars.

Like any astronomical target, GJ 3222 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 3222 b is an uncommon exoplanet

GJ 3222 b scores 31 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 3 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Sub-Neptune, Eccentric orbit and Two suns in its sky — 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.