Rare exoplanet 45 EP

TOI-1669 b

RA 45.9565° · Dec 83.5874° · exoplanet

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Score breakdown

· 4 badges

45 pts · Rare

Rare 46 pts → Epic

In the habitable zone +30
Multi-planet system +6
Confirmed exoplanet +5
Gas giant +4

Total score 45

1 more point to reach Epic.

Badges

Confirmed exoplanet · +5
In the habitable zone · +30
Gas giant · +4
Multi-planet system · +6

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. ≈ 6.4 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 566.7 thousand years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 3629 years in a starship at a tenth of light speed.
Distance. 363 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 1663.

Saying hello

Say hello. A radio message and its reply would take 726 years round-trip.

Standing on it

A year here. A full year lasts just 500 Earth days.

By the numbers

Size. About 14.1× the width of Earth.
Volume. About 2803 Earths could fit inside it.
Mass. Roughly 191× Earth's mass — about 0.6 Jupiters.
Your weight. You'd weigh about 1.0× your Earth weight standing here.
Density. Less dense than water — drop it in a big enough ocean and it would float.
Temperature. A frigid -31°C — colder than dry ice.

How we found it

Discovery. Found by W. M. Keck Observatory using the radial velocity method.

Cosmic context

Crowded system. One of at least 2 planets orbiting its star.

Properties

density gcc: 0.374
discovery facility: W. M. Keck Observatory
discovery method: Radial Velocity
dist ly: 362.9334
eccentricity: 0
eq temp k: 241.72
habitable zone: yes
insolation: 0.571
mass earth: 191
name: TOI-1669 b
orbital period days: 500
radius earth: 14.1
sys num planets: 2

About TOI-1669 b

TOI-1669 b is a rare exoplanet. It lies about 362.9 light-years from Earth, has an equilibrium temperature near 242 K, spans roughly 14.1 Earth radii and weighs about 191 Earth masses.

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

How to see it

Like any astronomical target, TOI-1669 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 TOI-1669 b is a rare exoplanet

TOI-1669 b scores 45 points on Spacedle's rarity scale, which places it in the rare tier. Another 1 point would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, In the habitable zone, Gas giant and Multi-planet system — 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.