Epic exoplanet 57 EP

BD-08 2823 c

RA 150.1972° · Dec -9.5166° · exoplanet

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Score breakdown

· 5 badges

57 pts · Epic

Epic 68 pts → Anomaly

In the habitable zone +30
Puffy low-density world +12
Multi-planet system +6
Confirmed exoplanet +5
Gas giant +4

Total score 57

11 more points to reach Anomaly.

Badges

Confirmed exoplanet · +5
In the habitable zone · +30
Gas giant · +4
Puffy low-density world · +12
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.
Cotton-candy planet. So low-density it would float on water.

Could we get there?

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

Getting there

Aboard Voyager 1. ≈ 2.4 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 210.5 thousand years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 1348 years in a starship at a tenth of light speed.
Distance. 135 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 1891.

Saying hello

Say hello. A radio message and its reply would take 270 years round-trip.

Standing on it

A year here. A full year lasts just 238 Earth days.

By the numbers

Size. About 12.5× the width of Earth.
Volume. About 1953 Earths could fit inside it.
Mass. Roughly 104× Earth's mass — about 0.3 Jupiters.
Your weight. You'd weigh about 0.7× your Earth weight standing here.
Density. Less dense than water — drop it in a big enough ocean and it would float.
Temperature. A frigid -39°C — colder than dry ice.

How we found it

Discovery. Found by La Silla Observatory using the radial velocity method.

Cosmic context

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

Properties

density gcc: 0.293
discovery facility: La Silla Observatory
discovery method: Radial Velocity
dist ly: 134.814
eccentricity: 0.19
eq temp k: 233.85
habitable zone: yes
insolation: 0.5117
mass earth: 104
name: BD-08 2823 c
orbital period days: 237.6
radius earth: 12.5
sys num planets: 2

About BD-08 2823 c

BD-08 2823 c is an epic exoplanet. It lies about 134.8 light-years from Earth, has an equilibrium temperature near 234 K, spans roughly 12.5 Earth radii and weighs about 104 Earth masses.

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

How to see it

Like any astronomical target, BD-08 2823 c 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 BD-08 2823 c is an epic exoplanet

BD-08 2823 c scores 57 points on Spacedle's rarity scale, which places it in the epic tier. Another 11 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, In the habitable zone, Gas giant, Puffy low-density world 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.