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Uncommon exoplanet 29 EP

GJ 724 b

RA 280.2384° · Dec -13.3825° · exoplanet

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Score breakdown

· 4 badges
29 pts · Uncommon
Uncommon 34 pts → Rare
  • Tidally locked +10
  • Eccentric orbit +9
  • Confirmed exoplanet +5
  • Sub-Neptune +5
Total score 29

5 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Sub-Neptune · +5
  • Eccentric orbit · +9
  • Tidally locked · +10

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 10.6 you'll want a small backyard telescope.
  • 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 July — 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. ≈ 972.4 thousand years at Voyager 1's speed (17 km/s).

Properties

density gcc
1.69
diameter km
41712.774
discovery facility
Calar Alto Observatory
discovery method
Radial Velocity
discovery year
2023
dist ly
55.335
eccentricity
0.577
eq temp k
611
host star teff
3799
insolation
23.32
mag
10.638
mass earth
10.75
name
GJ 724 b
orbital period days
5.1013
radius earth
3.27
semi major au
0.0469
spect
M1.0 V
sys num planets
1
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About GJ 724 b

GJ 724 b is an uncommon exoplanet. It lies about 55.3 light-years from Earth, shines at apparent magnitude 10.64, has spectral type M1.0 V and has an equilibrium temperature near 611 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 10.64, a small backyard telescope will bring it into view.

Like any astronomical target, GJ 724 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 724 b is an uncommon exoplanet

GJ 724 b scores 29 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 5 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Sub-Neptune, Eccentric orbit and Tidally locked — 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.