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Uncommon exoplanet 22 EP

Kepler-137 c

RA 282.1356° · Dec 43.0392° · exoplanet

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Score breakdown

· 4 badges
22 pts · Uncommon
Uncommon 34 pts → Rare
  • Super-Earth +8
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Found by Kepler +3
Total score 22

12 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Super-Earth · +8
  • Multi-planet system · +6
  • Found by Kepler · +3

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.
  • Crowded system. One of at least 2 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 13.1 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.

Could we get there?

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

Properties

density gcc
3.47
diameter km
23981.656
discovery facility
Kepler
discovery method
Transit
discovery year
2014
dist ly
988.1842
eccentricity
0
eq temp k
568
host star teff
5187
inclination
88.55
insolation
29.775
mag
13.063
mass earth
4.19
name
Kepler-137 c
orbital period days
18.7358
radius earth
1.88
semi major au
0.13
sys num planets
2
sys num stars
1

About Kepler-137 c

Kepler-137 c is an uncommon exoplanet. It lies about 988.2 light-years from Earth, shines at apparent magnitude 13.06, has an equilibrium temperature near 568 K and spans roughly 1.88 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 13.06, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, Kepler-137 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 Kepler-137 c is an uncommon exoplanet

Kepler-137 c scores 22 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 12 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Super-Earth, Multi-planet system 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.