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Uncommon exoplanet 22 EP

Kepler-37 b

RA 284.0593° · Dec 44.5184° · exoplanet

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Score breakdown

· 4 badges
22 pts · Uncommon
Uncommon 34 pts → Rare
  • Orbits a Sun-like star +8
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Found by Kepler +3
Total score 22

12 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Multi-planet system · +6
  • Found by Kepler · +3
  • Orbits a Sun-like star · +8

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 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 9.8 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.

Properties

density gcc
140
diameter km
3951.8708
discovery facility
Kepler
discovery method
Transit
discovery year
2013
dist ly
208.4812
eccentricity
0.098
eq temp k
718
host star teff
5357
inclination
88.63
insolation
44.5
mag
9.77
mass earth
0.79
name
Kepler-37 b
orbital period days
13.367
radius earth
0.3098
semi major au
0.1019
sys num planets
4
sys num stars
1

About Kepler-37 b

Kepler-37 b is an uncommon exoplanet. It lies about 208.5 light-years from Earth, shines at apparent magnitude 9.77, has an equilibrium temperature near 718 K and spans roughly 0.31 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 9.77, a small backyard telescope will bring it into view.

Like any astronomical target, Kepler-37 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-37 b is an uncommon exoplanet

Kepler-37 b scores 22 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 12 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Multi-planet system, Found by Kepler and Orbits a Sun-like star — 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.