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Rare exoplanet 45 EP

HD 86065 b

RA 148.9257° · Dec -18.1069° · exoplanet

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Score breakdown

· 5 badges
45 pts · Rare
Rare 46 pts → Epic
  • Denser than iron +18
  • Long-period world +10
  • Frozen world +8
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 45

1 more point to reach Epic.

Badges

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

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. ≈ 2.3 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 205.6 thousand years even at the Parker Solar Probe's 192 km/s.
  • At 10% light speed. ≈ 1317 years in a starship at a tenth of light speed.
  • Distance. 132 light-years from Earth.

Look-back time

  • Look-back time. The light you'd see left around the year 1894.

Saying hello

  • Say hello. A radio message and its reply would take 263 years round-trip.

Standing on it

  • A year here. A full year lasts about 70.6 Earth years.

By the numbers

  • Size. About 12.5× the width of Earth.
  • Volume. About 1953 Earths could fit inside it.
  • Mass. Roughly 2877× Earth's mass — about 9.1 Jupiters.
  • Your weight. You'd weigh about 18.4× your Earth weight standing here.
  • Density. Denser than solid iron.
  • Temperature. A frigid -221°C — colder than dry ice.

How we found it

  • Discovery. Found by Multiple Observatories using the radial velocity method.

Properties

density gcc
8.1
discovery facility
Multiple Observatories
discovery method
Radial Velocity
dist ly
131.6565
eccentricity
0.219
eq temp k
52.56
insolation
0.0013
mass earth
2877.3006
name
HD 86065 b
orbital period days
25775.7886
radius earth
12.5
sys num planets
1

About HD 86065 b

HD 86065 b is a rare exoplanet. It lies about 131.7 light-years from Earth, has an equilibrium temperature near 53 K, spans roughly 12.5 Earth radii and weighs about 2,877.3 Earth masses.

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

How to see it

Like any astronomical target, HD 86065 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 HD 86065 b is a rare exoplanet

HD 86065 b scores 45 points on Spacedle's rarity scale, which places it in the rare tier. Another 1 point would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Gas giant, Frozen world, Long-period world and Denser than iron — 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.

spacedle A daily roll through the real universe. © 2026 spacedle. Buy me a coffee

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.