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Epic exoplanet 60 EP

Kepler-22 b

RA 289.2172° · Dec 47.8841° · exoplanet

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Score breakdown

· 6 badges
60 pts · Epic
Epic 78 pts → Anomaly
  • In the habitable zone +30
  • Eccentric orbit +9
  • Orbits a Sun-like star +8
  • Confirmed exoplanet +5
  • Sub-Neptune +5
  • Found by Kepler +3
Total score 60

18 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • In the habitable zone · +30
  • Sub-Neptune · +5
  • Eccentric orbit · +9
  • Found by Kepler · +3
  • Orbits a Sun-like star · +8

Trivia

What makes it special

  • Goldilocks zone. Sits where it's neither too hot nor too cold — liquid water could exist on a surface here.

What it actually is

  • 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.
  • What the zone means. The habitable zone is only about temperature: it is the band where liquid water could survive on a surface. It is a promising address, not evidence of anything living.

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 11.8 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
5.2
diameter km
26788.02
discovery facility
Kepler
discovery method
Transit
discovery year
2011
dist ly
634.8366
eccentricity
0.72
eq temp k
279
habitable zone
yes
host star teff
5596
inclination
89.764
insolation
1.013
mag
11.751
mass earth
9.1
name
Kepler-22 b
orbital period days
289.8639
radius earth
2.1
semi major au
0.812
spect
G5 V
sys num planets
1
sys num stars
1

About Kepler-22 b

Kepler-22 b is an epic exoplanet. It lies about 634.8 light-years from Earth, shines at apparent magnitude 11.75, has spectral type G5 V and has an equilibrium temperature near 279 K.

Sits where it's neither too hot nor too cold — liquid water could exist on a surface here.

How to see it

At apparent magnitude 11.75, a small backyard telescope will bring it into view.

Like any astronomical target, Kepler-22 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-22 b is an epic exoplanet

Kepler-22 b scores 60 points on Spacedle's rarity scale, which places it in the epic tier. Another 18 points would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, In the habitable zone, Sub-Neptune, Eccentric orbit, 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.