Epic exoplanet 46 EP

Kepler-1229 b

RA 297.4868° · Dec 46.9967° · exoplanet

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Score breakdown

· 4 badges

46 pts · Epic

Epic 68 pts → Anomaly

In the habitable zone +30
Super-Earth +8
Confirmed exoplanet +5
Found by Kepler +3

Total score 46

22 more points to reach Anomaly.

Badges

Confirmed exoplanet · +5
In the habitable zone · +30
Super-Earth · +8
Found by Kepler · +3

Trivia

What makes it special

Goldilocks zone. Sits where it's neither too hot nor too cold — liquid water could exist.

Could we get there?

Verdict. Hopelessly far for any craft humanity can build today.

Getting there

Aboard Voyager 1. ≈ 15.2 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 1.4 million years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 8659 years in a starship at a tenth of light speed.
Distance. 866 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 1160.

Saying hello

Say hello. A radio message and its reply would take 1732 years round-trip.

Standing on it

A year here. A full year lasts just 86.8 Earth days.

By the numbers

Size. About 1.4× the width of Earth.
Mass. About 2.5× the mass of Earth.
Your weight. You'd weigh about 1.3× your Earth weight standing here.
Temperature. A frigid -61°C — colder than dry ice.

How we found it

Discovery. Found by Kepler using the transit method.

Properties

density gcc: 5.09
discovery facility: Kepler
discovery method: Transit
dist ly: 865.8855
eccentricity: 0
eq temp k: 212
habitable zone: yes
insolation: 0.524
mass earth: 2.54
name: Kepler-1229 b
orbital period days: 86.829
radius earth: 1.4
sys num planets: 1

About Kepler-1229 b

Kepler-1229 b is an epic exoplanet. It lies about 865.9 light-years from Earth, has an equilibrium temperature near 212 K, spans roughly 1.4 Earth radii and weighs about 2.54 Earth masses.

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

How to see it

Like any astronomical target, Kepler-1229 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-1229 b is an epic exoplanet

Kepler-1229 b scores 46 points on Spacedle's rarity scale, which places it in the epic tier. Another 22 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, In the habitable zone, Super-Earth and Found by Kepler — 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.