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Uncommon exoplanet 26 EP

Kepler-1308 b

RA 285.9288° · Dec 38.5207° · exoplanet

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Score breakdown

· 4 badges
26 pts · Uncommon
Uncommon 34 pts → Rare
  • Tidally locked +10
  • Orbits a red dwarf +8
  • Confirmed exoplanet +5
  • Found by Kepler +3
Total score 26

8 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Tidally locked · +10
  • Found by Kepler · +3
  • Orbits a red dwarf · +8

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. Its density says rock, though lighter than Earth's mix: probably less iron, or a thick shell of water and ice over the top.

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.

Getting there

  • Aboard Voyager 1. ≈ 6.5 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
3.65
diameter km
6633.224
discovery facility
Kepler
discovery method
Transit
discovery year
2016
dist ly
367.5941
eccentricity
0
eq temp k
662
host star teff
3468
inclination
83.39
insolation
58.108
mag
16.4
mass earth
0.0933
name
Kepler-1308 b
orbital period days
2.1043
radius earth
0.52
semi major au
0.025
sys num planets
1
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About Kepler-1308 b

Kepler-1308 b is an uncommon exoplanet. It lies about 367.6 light-years from Earth, shines at apparent magnitude 16.4, has an equilibrium temperature near 662 K and spans roughly 0.52 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 16.4, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, Kepler-1308 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-1308 b is an uncommon exoplanet

Kepler-1308 b scores 26 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 8 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Tidally locked, Found by Kepler and Orbits a red dwarf — 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.