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Common exoplanet 15 EP

Kepler-65 e

RA 288.6887° · Dec 41.1511° · exoplanet

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Score breakdown

· 3 badges
15 pts · Common
Common 22 pts → Uncommon
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 15

7 more points to reach Uncommon.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Multi-planet system · +6

Trivia

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.
  • Crowded system. One of at least 4 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 10.9 you'll want a small backyard telescope.
  • 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
0.532
diameter km
177311.18
discovery facility
W. M. Keck Observatory
discovery method
Radial Velocity
discovery year
2019
dist ly
990.6271
eccentricity
0.283
eq temp k
389.08
host star teff
6220
inclination
127
insolation
4.0231
mag
10.922
mass earth
260
name
Kepler-65 e
orbital period days
258.8
radius earth
13.9
semi major au
0.8539
sys num planets
4
sys num stars
1

About Kepler-65 e

Kepler-65 e is a common exoplanet. It lies about 990.6 light-years from Earth, shines at apparent magnitude 10.92, has an equilibrium temperature near 389 K and spans roughly 13.9 Earth radii.

Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.

How to see it

At apparent magnitude 10.92, a small backyard telescope will bring it into view.

Like any astronomical target, Kepler-65 e 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-65 e is a common exoplanet

Kepler-65 e scores 15 points on Spacedle's rarity scale, which places it in the common tier. Another 7 points would lift it into a rarer tier.

That score comes from 3 science badges — Confirmed exoplanet, Gas giant and Multi-planet system — 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.