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Uncommon exoplanet 28 EP

L 363-38 b

RA 10.8555° · Dec -41.2953° · exoplanet

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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. Its density says rock, though lighter than Earth's mix: probably less iron, or a thick shell of water and ice over the top.

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.
  • 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 October — 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. ≈ 586.3 thousand years at Voyager 1's speed (17 km/s).

Properties

density gcc
3.21
diameter km
25512.4
discovery facility
Paranal Observatory
discovery method
Radial Velocity
discovery year
2023
dist ly
33.3641
eq temp k
330
host star teff
3129
insolation
5.6424
mag
13.027
mass earth
4.67
name
L 363-38 b
orbital period days
8.781
radius earth
2
semi major au
0.048
sys num planets
1
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About L 363-38 b

L 363-38 b is an uncommon exoplanet. It lies about 33.4 light-years from Earth, shines at apparent magnitude 13.03, has an equilibrium temperature near 330 K and spans roughly 2 Earth radii.

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 13.03, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, L 363-38 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 L 363-38 b is an uncommon exoplanet

L 363-38 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.