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Anomaly exoplanet 77 EP

HIP 81208 C b

RA 248.8075° · Dec -35.7248° · exoplanet

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Score breakdown

· 7 badges
77 pts · Anomaly
Anomaly 95 pts → Mythic
  • Denser than iron +18
  • Directly imaged +16
  • Lava world +14
  • Hot Jupiter +10
  • Long-period world +10
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 77

18 more points to reach Mythic.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Hot Jupiter · +10
  • Lava world · +14
  • Long-period world · +10
  • Denser than iron · +18
  • Directly imaged · +16

Trivia

What makes it special

  • Lava world. Its surface is likely an ocean of molten rock.
  • Heavyweight. Packed denser than solid iron.

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).
  • Fastest probe ever. ≈ 751.3 thousand years even at the Parker Solar Probe's 192 km/s.
  • At 10% light speed. ≈ 4812 years in a starship at a tenth of light speed.
  • Distance. 481 light-years from Earth.

Look-back time

  • Look-back time. The light you'd see left around the year 1545.

Saying hello

  • Say hello. A radio message and its reply would take 962 years round-trip.

Standing on it

  • A year here. A full year lasts about 285 Earth years.

By the numbers

  • Size. About 12.3× the width of Earth.
  • Volume. About 1861 Earths could fit inside it.
  • Mass. Roughly 4704× Earth's mass — about 14.8 Jupiters.
  • Your weight. You'd weigh about 31.1× your Earth weight standing here.
  • Density. Denser than solid iron.
  • Temperature. Around 2050 K — hot enough to vaporise iron.

How we found it

  • Discovery. Found by Paranal Observatory using the imaging method.

Properties

density gcc
13.9
discovery facility
Paranal Observatory
discovery method
Imaging
dist ly
481.1877
eq temp k
2050
mass earth
4703.8604
name
HIP 81208 C b
orbital period days
104100
radius earth
12.3
sys num planets
1

About HIP 81208 C b

HIP 81208 C b is an anomaly exoplanet. It lies about 481.2 light-years from Earth, has an equilibrium temperature near 2,050 K, spans roughly 12.3 Earth radii and weighs about 4,703.86 Earth masses.

Its surface is likely an ocean of molten rock.

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 anomaly exoplanet

HIP 81208 C b scores 77 points on Spacedle's rarity scale, which places it in the anomaly tier. Another 18 points would lift it into a rarer tier.

That score comes from 7 science badges — Confirmed exoplanet, Gas giant, Hot Jupiter, Lava world, Long-period world, Denser than iron and Directly imaged — 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.

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Sky imagery and survey data courtesy of Aladin Lite & CDS, Strasbourg. Object data from the NASA Exoplanet Archive, JPL Small-Body Database, and the ATNF Pulsar Catalogue.