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Rare exoplanet 39 EP

Kepler-296 d

RA 286.5400° · Dec 49.4373° · exoplanet

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Score breakdown

· 5 badges
39 pts · Rare
Rare 50 pts → Epic
  • Richly packed system +14
  • Two suns in its sky +12
  • Confirmed exoplanet +5
  • Sub-Neptune +5
  • Found by Kepler +3
Total score 39

11 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Sub-Neptune · +5
  • Richly packed system · +14
  • Found by Kepler · +3
  • Two suns in its sky · +12

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. Too light to be solid rock and too heavy to be all gas: most likely a deep global ocean or a thick steamy envelope over a rocky core.
  • 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 16.4 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
1.9
diameter km
26660.458
discovery facility
Kepler
discovery method
Transit
discovery year
2014
dist ly
544.6805
eccentricity
0.33
eq temp k
403
host star teff
3740
inclination
89.77
insolation
2.9
mag
16.363
mass earth
5.02
multi star system
yes
name
Kepler-296 d
orbital period days
19.8503
radius earth
2.09
semi major au
0.118
spect
M2 V
sys num planets
5
sys num stars
2

About Kepler-296 d

Kepler-296 d is a rare exoplanet. It lies about 544.7 light-years from Earth, shines at apparent magnitude 16.36, has spectral type M2 V and has an equilibrium temperature near 403 K.

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 16.36, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, Kepler-296 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-296 d is a rare exoplanet

Kepler-296 d scores 39 points on Spacedle's rarity scale, which places it in the rare tier. Another 11 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Sub-Neptune, Richly packed system, Found by Kepler and Two suns in its sky — 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.