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Epic exoplanet 59 EP

Pr0211 b

RA 130.5477° · Dec 19.2770° · exoplanet

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Score breakdown

· 7 badges
59 pts · Epic
Epic 78 pts → Anomaly
  • Lava world +14
  • Two suns in its sky +12
  • Tidally locked +10
  • Orbits a Sun-like star +8
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 59

19 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Lava world · +14
  • Tidally locked · +10
  • Multi-planet system · +6
  • Orbits a Sun-like star · +8
  • Two suns in its sky · +12

Trivia

What makes it special

  • Lava world. Its surface is almost certainly an ocean of molten rock, kept liquid by the star it hugs.

What it actually is

  • Hugging its star. It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.
  • 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.
  • Crowded system. One of at least 2 planets orbiting its star.

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 12.2 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • Northern sky. It rides the northern half of the sky — an easier target the further north you are.
  • Best time of year. It stands highest in the middle of the night around January — that's when to go looking.

Properties

density gcc
1.36
diameter km
170933.08
discovery facility
Fred Lawrence Whipple Observatory
discovery method
Radial Velocity
discovery year
2012
dist ly
595.9327
eccentricity
0.011
eq temp k
1304.13
host star teff
5300
insolation
457.3078
mag
12.163
mass earth
597.5204
multi star system
yes
name
Pr0211 b
orbital period days
2.1461
radius earth
13.4
semi major au
0.0318
sys num planets
2
sys num stars
2
tidally locked
yes
tidally locked inferred
yes

About Pr0211 b

Pr0211 b is an epic exoplanet. It lies about 595.9 light-years from Earth, shines at apparent magnitude 12.16, has an equilibrium temperature near 1,304 K and spans roughly 13.4 Earth radii.

Its surface is almost certainly an ocean of molten rock, kept liquid by the star it hugs.

How to see it

At apparent magnitude 12.16, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, Pr0211 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 Pr0211 b is an epic exoplanet

Pr0211 b scores 59 points on Spacedle's rarity scale, which places it in the epic tier. Another 19 points would lift it into a rarer tier.

That score comes from 7 science badges — Confirmed exoplanet, Gas giant, Lava world, Tidally locked, Multi-planet system, Orbits a Sun-like star and Two suns in its sky — 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.