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Rare exoplanet 40 EP

Kepler-333 b

RA 292.2861° · Dec 40.9135° · exoplanet

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Score breakdown

· 6 badges
40 pts · Rare
Rare 50 pts → Epic
  • Two suns in its sky +12
  • Super-Earth +8
  • Distant (over 1,000 light-years) +6
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Found by Kepler +3
Total score 40

10 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • Super-Earth · +8
  • Multi-planet system · +6
  • Found by Kepler · +3
  • Two suns in its sky · +12

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 2 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
67.4
diameter km
16838.184
discovery facility
Kepler
discovery method
Transit
discovery year
2014
dist ly
1058.0925
eccentricity
0
eq temp k
480
host star teff
4259
inclination
88.9
insolation
16.819
mag
15.052
mass earth
28.2
multi star system
yes
name
Kepler-333 b
orbital period days
12.5512
radius earth
1.32
semi major au
0.087
sys num planets
2
sys num stars
2

About Kepler-333 b

Kepler-333 b is a rare exoplanet. It lies about 1,058.1 light-years from Earth, shines at apparent magnitude 15.05, has an equilibrium temperature near 480 K and spans roughly 1.32 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 15.05, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, Kepler-333 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-333 b is a rare exoplanet

Kepler-333 b scores 40 points on Spacedle's rarity scale, which places it in the rare tier. Another 10 points would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, Distant (over 1,000 light-years), Super-Earth, 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.