Epic exoplanet 53 EP

Kepler-1661 b

RA 285.1671° · Dec 41.9669° · exoplanet

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Score breakdown

· 5 badges

53 pts · Epic

Epic 68 pts → Anomaly

In the habitable zone +30
Distant (>1000 ly) +10
Confirmed exoplanet +5
Sub-Neptune +5
Found by Kepler +3

Total score 53

15 more points to reach Anomaly.

Badges

Confirmed exoplanet · +5
In the habitable zone · +30
Sub-Neptune · +5
Found by Kepler · +3
Distant (>1000 ly) · +10

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. Impossible with our current technology — and the next millennium of it.

Getting there

Aboard Voyager 1. ≈ 23.5 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 2.1 million years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 13.4 thousand years in a starship at a tenth of light speed.
Distance. 1339 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 687.

Saying hello

Say hello. A radio message and its reply would take 2678 years round-trip.

Standing on it

A year here. A full year lasts just 175 Earth days.

By the numbers

Size. About 3.9× the width of Earth.
Volume. About 58 Earths could fit inside it.
Mass. About 17× the mass of Earth.
Your weight. You'd weigh about 1.1× your Earth weight standing here.
Temperature. A frigid -30°C — colder than dry ice.

How we found it

Discovery. Found by Kepler using the transit method.

Properties

density gcc: 1.6
discovery facility: Kepler
discovery method: Transit
dist ly: 1339.2194
eccentricity: 0.057
eq temp k: 243
habitable zone: yes
insolation: 0.88
mass earth: 17
name: Kepler-1661 b
orbital period days: 175.06
radius earth: 3.87
sys num planets: 1

About Kepler-1661 b

Kepler-1661 b is an epic exoplanet. It lies about 1,339.2 light-years from Earth, has an equilibrium temperature near 243 K, spans roughly 3.87 Earth radii and weighs about 17 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-1661 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-1661 b is an epic exoplanet

Kepler-1661 b scores 53 points on Spacedle's rarity scale, which places it in the epic tier. Another 15 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, In the habitable zone, Sub-Neptune, Found by Kepler and Distant (>1000 ly) — 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.