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Uncommon exoplanet 25 EP

GJ 341 b

RA 140.3994° · Dec -60.2812° · exoplanet

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Score breakdown

· 3 badges
25 pts · Uncommon
Uncommon 34 pts → Rare
  • Earth-sized +16
  • Confirmed exoplanet +5
  • Found by TESS +4
Total score 25

9 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Earth-sized · +16
  • Found by TESS · +4

Trivia

What makes it special

  • Earth-sized. Genuinely comparable to Earth in size. Worlds in this narrow band are the ones every next-generation telescope is being pointed at.

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.

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 9.5 you'll want a small backyard telescope.
  • Southern sky only. So far south it never rises for most of the northern hemisphere. To see it you'd have to travel to Chile, South Africa or Australia.
  • Best time of year. It stands highest in the middle of the night around February — 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. ≈ 599.2 thousand years at Voyager 1's speed (17 km/s).

Properties

diameter km
11225.456
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
discovery year
2025
dist ly
34.0963
eccentricity
0
eq temp k
629
host star teff
3770
inclination
89.24
insolation
13.8
mag
9.49
mass earth
4
name
GJ 341 b
orbital period days
7.5769
radius earth
0.88
spect
M1
sys num planets
1
sys num stars
1

About GJ 341 b

GJ 341 b is an uncommon exoplanet. It lies about 34.1 light-years from Earth, shines at apparent magnitude 9.49, has spectral type M1 and has an equilibrium temperature near 629 K.

Genuinely comparable to Earth in size. Worlds in this narrow band are the ones every next-generation telescope is being pointed at.

How to see it

At apparent magnitude 9.49, a small backyard telescope will bring it into view.

Like any astronomical target, GJ 341 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 341 b is an uncommon exoplanet

GJ 341 b scores 25 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 9 points would lift it into a rarer tier.

That score comes from 3 science badges — Confirmed exoplanet, Earth-sized and Found by TESS — 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.