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Epic exoplanet 52 EP

Kepler-408 b

RA 284.7862° · Dec 48.4233° · exoplanet

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Score breakdown

· 6 badges
52 pts · Epic
Epic 78 pts → Anomaly
  • Earth-sized +16
  • Lava world +14
  • Tidally locked +10
  • Confirmed exoplanet +5
  • Blasted by starlight +4
  • Found by Kepler +3
Total score 52

26 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Earth-sized · +16
  • Lava world · +14
  • Tidally locked · +10
  • Blasted by starlight · +4
  • Found by Kepler · +3

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.
  • Lava world. Its surface is almost certainly an ocean of molten rock, kept liquid by the star it hugs.

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. 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 8.8 it is just past naked-eye reach — ordinary binoculars will pull it in.
  • 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.

Could we get there?

  • Verdict. Hopelessly far for any craft humanity can build today.

Properties

diameter km
10460.084
discovery facility
Kepler
discovery method
Transit
discovery year
2014
dist ly
289.5717
eccentricity
0
eq temp k
1561
host star teff
6104
inclination
87.51
insolation
1503.581
mag
8.834
mass earth
5
name
Kepler-408 b
orbital period days
2.465
radius earth
0.82
semi major au
0.0359
sys num planets
1
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About Kepler-408 b

Kepler-408 b is an epic exoplanet. It lies about 289.6 light-years from Earth, shines at apparent magnitude 8.83, has an equilibrium temperature near 1,561 K and spans roughly 0.82 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 8.83, it is an easy target for binoculars.

Like any astronomical target, Kepler-408 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 Kepler-408 b is an epic exoplanet

Kepler-408 b scores 52 points on Spacedle's rarity scale, which places it in the epic tier. Another 26 points would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, Earth-sized, Lava world, Tidally locked, Blasted by starlight and Found by Kepler — 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.