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Epic exoplanet 61 EP

HIP 81208 C b

RA 248.8075° · Dec -35.7248° · exoplanet

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Score breakdown

· 6 badges
61 pts · Epic
Epic 78 pts → Anomaly
  • Directly imaged +16
  • Lava world +14
  • Two suns in its sky +12
  • Long-period world +10
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 61

17 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Lava world · +14
  • Long-period world · +10
  • Directly imaged · +16
  • 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.

Hard to believe

  • Denser than iron. It is packed tighter than solid iron — whatever it is made of, it is not ordinary rock.

What it actually is

  • What it is made of. Denser than Earth — a solid world of rock and iron, with no meaningful atmosphere to speak of by mass.

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

  • Southern sky. It rides the southern half of the sky — an easier target the further south you are.
  • Best time of year. It stands highest in the middle of the night around May — that's when to go looking.

Could we get there?

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

Getting there

  • Aboard Voyager 1. ≈ 8.5 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
13.9
diameter km
156901.26
discovery facility
Paranal Observatory
discovery method
Imaging
discovery year
2023
dist ly
481.1877
eq temp k
2050
mass earth
4703.8604
multi star system
yes
name
HIP 81208 C b
orbital period days
104100
radius earth
12.3
semi major au
23.04
spect
M
sys num planets
1
sys num stars
3

Nearby objects

About HIP 81208 C b

HIP 81208 C b is an epic exoplanet. It lies about 481.2 light-years from Earth, has spectral type M, has an equilibrium temperature near 2,050 K and spans roughly 12.3 Earth radii.

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

How to see it

Like any astronomical target, HIP 81208 C 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 HIP 81208 C b is an epic exoplanet

HIP 81208 C 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 6 science badges — Confirmed exoplanet, Gas giant, Lava world, Long-period world, Directly imaged 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.