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Epic exoplanet 62 EP

KOI-351 c

RA 284.4335° · Dec 49.3051° · exoplanet

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Score breakdown

· 7 badges
62 pts · Epic
Epic 78 pts → Anomaly
  • Earth-sized +16
  • Richly packed system +14
  • Tidally locked +10
  • Orbits a Sun-like star +8
  • Distant (over 1,000 light-years) +6
  • Confirmed exoplanet +5
  • Found by Kepler +3
Total score 62

16 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • Earth-sized · +16
  • Tidally locked · +10
  • Richly packed system · +14
  • Found by Kepler · +3
  • Orbits a Sun-like star · +8

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 8 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 13.9 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • Northern sky. It rides the northern half of the sky — an easier target the further north you are.
  • Best time of year. It stands highest in the middle of the night around July — that's when to go looking.

Properties

density gcc
5.9
diameter km
15179.878
discovery facility
Kepler
discovery method
Transit
discovery year
2013
dist ly
2766.6313
eccentricity
0
eq temp k
987
host star teff
6080
inclination
89.68
insolation
236.315
mag
13.883
mass earth
1.81
name
KOI-351 c
orbital period days
8.7194
radius earth
1.19
semi major au
0.089
sys num planets
8
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About KOI-351 c

KOI-351 c is an epic exoplanet. It lies about 2,766.6 light-years from Earth, shines at apparent magnitude 13.88, has an equilibrium temperature near 987 K 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 13.88, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, KOI-351 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 KOI-351 c is an epic exoplanet

KOI-351 c scores 62 points on Spacedle's rarity scale, which places it in the epic tier. Another 16 points would lift it into a rarer tier.

That score comes from 7 science badges — Confirmed exoplanet, Distant (over 1,000 light-years), Earth-sized, Tidally locked, Richly packed system, Found by Kepler and Orbits a Sun-like star — 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.