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Rare exoplanet 41 EP

Kepler-25 b

RA 286.6384° · Dec 39.4879° · exoplanet

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Score breakdown

· 6 badges
41 pts · Rare
Rare 50 pts → Epic
  • Two suns in its sky +12
  • Tidally locked +10
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Sub-Neptune +5
  • Found by Kepler +3
Total score 41

9 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Sub-Neptune · +5
  • Tidally locked · +10
  • Multi-planet system · +6
  • 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 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 10.8 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
2.32
diameter km
35054.0376
discovery facility
Kepler
discovery method
Transit
discovery year
2011
dist ly
793.3712
eccentricity
0.0029
eq temp k
1185
host star teff
6354
inclination
92.827
insolation
542.96
mag
10.769
mass earth
8.7
multi star system
yes
name
Kepler-25 b
orbital period days
6.2383
radius earth
2.748
semi major au
0.0695
spect
F8
sys num planets
3
sys num stars
2
tidally locked
yes
tidally locked inferred
yes

About Kepler-25 b

Kepler-25 b is a rare exoplanet. It lies about 793.4 light-years from Earth, shines at apparent magnitude 10.77, has spectral type F8 and has an equilibrium temperature near 1,185 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 10.77, a small backyard telescope will bring it into view.

Like any astronomical target, Kepler-25 b 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-25 b is a rare exoplanet

Kepler-25 b scores 41 points on Spacedle's rarity scale, which places it in the rare tier. Another 9 points would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, Sub-Neptune, Tidally locked, Multi-planet 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.