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Epic exoplanet 61 EP

BEBOP-3 b

RA 110.9027° · Dec 79.1324° · exoplanet

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Score breakdown

· 5 badges
61 pts · Epic
Epic 78 pts → Anomaly
  • In the habitable zone +30
  • Circumbinary (orbits both stars) +14
  • Orbits a Sun-like star +8
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 61

17 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • In the habitable zone · +30
  • Gas giant · +4
  • Circumbinary (orbits both stars) · +14
  • 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.

Hard to believe

  • It would float. It is less dense than water. Drop it in a big enough ocean and the whole world would bob on the surface.

What it actually is

  • What it is made of. Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.
  • 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 9.3 you'll want a small backyard telescope.
  • Never sets. So far north that from Britain, Canada or northern Europe it never dips below the horizon — it is up every clear night of the year.
  • Best time of year. It stands highest in the middle of the night around January — that's when to go looking.

Properties

circumbinary
yes
density gcc
0.34
diameter km
181138.04
discovery facility
Haute-Provence Observatory
discovery method
Radial Velocity
discovery year
2025
dist ly
388.2952
eccentricity
0.247
eq temp k
287.88
habitable zone
yes
host star teff
6033
insolation
1.159
mag
9.259
mass earth
177.3483
name
BEBOP-3 b
orbital period days
547
radius earth
14.2
semi major au
1.444
sys num planets
1
sys num stars
2

About BEBOP-3 b

BEBOP-3 b is an epic exoplanet. It lies about 388.3 light-years from Earth, shines at apparent magnitude 9.26, has an equilibrium temperature near 288 K and spans roughly 14.2 Earth radii.

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 9.26, a small backyard telescope will bring it into view.

Like any astronomical target, BEBOP-3 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 BEBOP-3 b is an epic exoplanet

BEBOP-3 b scores 61 points on Spacedle's rarity scale, which places it in the epic tier. Another 17 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, In the habitable zone, Gas giant, Circumbinary (orbits both stars) 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.