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Epic exoplanet 54 EP

Kepler-82 d

RA 292.8734° · Dec 42.9662° · exoplanet

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Score breakdown

· 7 badges
54 pts · Epic
Epic 78 pts → Anomaly
  • Richly packed system +14
  • Tidally locked +10
  • Super-Earth +8
  • Orbits a Sun-like star +8
  • Distant (over 1,000 light-years) +6
  • Confirmed exoplanet +5
  • Found by Kepler +3
Total score 54

24 more points to reach Anomaly.

Badges

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

Trivia

Hard to believe

  • Denser than iron. It is packed tighter than solid iron — whatever it is made of, it is not ordinary rock.

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 15.1 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.

Properties

density gcc
220
diameter km
22578.474
discovery facility
Kepler
discovery method
Transit
discovery year
2014
dist ly
2949.5135
eccentricity
0
eq temp k
1253
host star teff
5428
inclination
86.85
insolation
484.351
mag
15.131
mass earth
885.098
name
Kepler-82 d
orbital period days
2.383
radius earth
1.77
semi major au
0.034
sys num planets
5
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About Kepler-82 d

Kepler-82 d is an epic exoplanet. It lies about 2,949.5 light-years from Earth, shines at apparent magnitude 15.13, has an equilibrium temperature near 1,253 K and spans roughly 1.77 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 15.13, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, Kepler-82 d 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-82 d is an epic exoplanet

Kepler-82 d scores 54 points on Spacedle's rarity scale, which places it in the epic tier. Another 24 points would lift it into a rarer tier.

That score comes from 7 science badges — Confirmed exoplanet, Distant (over 1,000 light-years), Super-Earth, 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.