Epic exoplanet 61 EP

HIP 54515 b

RA 167.3066° · Dec -1.3333° · exoplanet

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Score breakdown

· 6 badges

61 pts · Epic

Epic 68 pts → Anomaly

Denser than iron +18
Directly imaged +16
Long-period world +10
Frozen world +8
Confirmed exoplanet +5
Gas giant +4

Total score 61

7 more points to reach Anomaly.

Badges

Confirmed exoplanet · +5
Gas giant · +4
Frozen world · +8
Long-period world · +10
Denser than iron · +18
Directly imaged · +16

Trivia

What makes it special

Frozen world. A deep-frozen world far from its star's warmth.
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. ≈ 4.7 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 421.7 thousand years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 2701 years in a starship at a tenth of light speed.
Distance. 270 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 1756.

Saying hello

Say hello. A radio message and its reply would take 540 years round-trip.

Standing on it

A year here. A full year lasts about 90.3 Earth years.

By the numbers

Size. About 12.2× the width of Earth.
Volume. About 1816 Earths could fit inside it.
Mass. Roughly 5626× Earth's mass — about 17.7 Jupiters.
Your weight. You'd weigh about 37.8× your Earth weight standing here.
Density. Denser than solid iron.
Temperature. A frigid -172°C — colder than dry ice.

How we found it

Discovery. Found by Subaru Telescope using the imaging method.

Properties

density gcc: 17
discovery facility: Subaru Telescope
discovery method: Imaging
dist ly: 270.0901
eccentricity: 0.42
eq temp k: 100.72
insolation: 0.0171
mass earth: 5625.5628
name: HIP 54515 b
orbital period days: 33000
radius earth: 12.2
sys num planets: 1

About HIP 54515 b

HIP 54515 b is an epic exoplanet. It lies about 270.1 light-years from Earth, has an equilibrium temperature near 101 K, spans roughly 12.2 Earth radii and weighs about 5,625.56 Earth masses.

A deep-frozen world far from its star's warmth.

How to see it

Like any astronomical target, HIP 54515 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 54515 b is an epic exoplanet

HIP 54515 b scores 61 points on Spacedle's rarity scale, which places it in the epic tier. Another 7 points would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, Gas giant, Frozen 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.