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Rare exoplanet 35 EP

K2-384 c

RA 20.4998° · Dec 0.7510° · exoplanet

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Score breakdown

· 3 badges
35 pts · Rare
Rare 50 pts → Epic
  • Earth-sized +16
  • Richly packed system +14
  • Confirmed exoplanet +5
Total score 35

15 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Earth-sized · +16
  • Richly packed system · +14

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.
  • What it is made of. Denser than Earth — a solid world of rock and iron, with no meaningful atmosphere to speak of by mass.
  • Crowded system. One of at least 5 planets orbiting its star.

Sense of scale

  • In perspective. Far away by human standards, yet still a local address inside the Milky Way's spiral arms.

Find it in the sky

  • How to spot it. At magnitude 16.1 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • Seen from everywhere. It sits almost on the celestial equator, so it can be seen from essentially anywhere on Earth.
  • Best time of year. It stands highest in the middle of the night around October — that's when to go looking.

Properties

density gcc
5.92
diameter km
15192.6342
discovery facility
K2
discovery method
Transit
discovery year
2022
dist ly
269.6015
host star teff
3623
mag
16.12
mass earth
1.82
name
K2-384 c
orbital period days
4.1948
radius earth
1.191
spect
M4 V
sys num planets
5
sys num stars
1

Nearby objects

About K2-384 c

K2-384 c is a rare exoplanet. It lies about 269.6 light-years from Earth, shines at apparent magnitude 16.12, has spectral type M4 V and spans roughly 1.19 Earth radii.

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

Like any astronomical target, K2-384 c 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 K2-384 c is a rare exoplanet

K2-384 c scores 35 points on Spacedle's rarity scale, which places it in the rare tier. Another 15 points would lift it into a rarer tier.

That score comes from 3 science badges — Confirmed exoplanet, Earth-sized and Richly packed system — 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.