← Back to dex
Anomaly exoplanet 88 EP

Kepler-47 c

RA 295.2979° · Dec 46.9204° · exoplanet

Loading sky survey…
🌌 View in 3D star map
Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 9 badges
88 pts · Anomaly
Anomaly 120 pts → Mythic
  • In the habitable zone +30
  • Circumbinary (orbits both stars) +14
  • Puffy low-density world +12
  • Orbits a Sun-like star +8
  • Distant (over 1,000 light-years) +6
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Neptune-like +4
  • Found by Kepler +3
Total score 88

32 more points to reach Mythic.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • In the habitable zone · +30
  • Neptune-like · +4
  • Puffy low-density world · +12
  • Multi-planet system · +6
  • Circumbinary (orbits both stars) · +14
  • Found by Kepler · +3
  • Orbits a Sun-like star · +8

Trivia

What makes it special

  • Goldilocks zone. Sits where it's neither too hot nor too cold — liquid water could exist on a surface here.

Hard to believe

  • It would float. It is less dense than water. Drop it in a big enough ocean and the whole world would bob on the surface.

What it actually is

  • What it is made of. Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.
  • What the zone means. The habitable zone is only about temperature: it is the band where liquid water could survive on a surface. It is a promising address, not evidence of anything living.
  • Crowded system. One of at least 3 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 15.3 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.

Properties

circumbinary
yes
density gcc
0.17
diameter km
59316.33
discovery facility
Kepler
discovery method
Transit
discovery year
2012
dist ly
3343.1642
eccentricity
0.044
eq temp k
267.82
habitable zone
yes
host star teff
5636
inclination
90.1925
insolation
0.9037
mag
15.31
mass earth
3.17
name
Kepler-47 c
orbital period days
303.227
radius earth
4.65
semi major au
0.9638
sys num planets
3
sys num stars
2

About Kepler-47 c

Kepler-47 c is an anomaly exoplanet. It lies about 3,343.2 light-years from Earth, shines at apparent magnitude 15.31, has an equilibrium temperature near 268 K and spans roughly 4.65 Earth radii.

Sits where it's neither too hot nor too cold — liquid water could exist on a surface here.

How to see it

At apparent magnitude 15.31, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, Kepler-47 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-47 c is an anomaly exoplanet

Kepler-47 c scores 88 points on Spacedle's rarity scale, which places it in the anomaly tier. Another 32 points would lift it into a rarer tier.

That score comes from 9 science badges — Confirmed exoplanet, Distant (over 1,000 light-years), In the habitable zone, Neptune-like, Puffy low-density world, Multi-planet system, Circumbinary (orbits both stars) 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.