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Trash exoplanet 9 EP

HIP 18606 b

RA 59.7181° · Dec -5.4707° · exoplanet

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Score breakdown

· 2 badges
9 pts · Trash
Trash 15 pts → Common
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 9

6 more points to reach Common.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4

Trivia

Could we get there?

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

Getting there

  • Aboard Voyager 1. ≈ 2.7 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 239.5 thousand years even at the Parker Solar Probe's 192 km/s.
  • At 10% light speed. ≈ 1534 years in a starship at a tenth of light speed.
  • Distance. 153 light-years from Earth.

Look-back time

  • Look-back time. The light you'd see left around the year 1873.

Saying hello

  • Say hello. A radio message and its reply would take 307 years round-trip.

Standing on it

  • A year here. A full year lasts just 675 Earth days.

By the numbers

  • Size. About 14× the width of Earth.
  • Volume. About 2744 Earths could fit inside it.
  • Mass. Roughly 245× Earth's mass — about 0.8 Jupiters.
  • Your weight. You'd weigh about 1.2× your Earth weight standing here.
  • Density. Less dense than water — drop it in a big enough ocean and it would float.
  • Temperature. A scorching 133°C on average.

How we found it

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

Properties

density gcc
0.49
discovery facility
Multiple Observatories
discovery method
Radial Velocity
dist ly
153.3873
eq temp k
405.91
insolation
4.4294
mass earth
244.7279
name
HIP 18606 b
orbital period days
674.94
radius earth
14
sys num planets
1

About HIP 18606 b

HIP 18606 b is a trash exoplanet. It lies about 153.4 light-years from Earth, has an equilibrium temperature near 406 K, spans roughly 14 Earth radii and weighs about 244.73 Earth masses.

About 14× the width of Earth.

How to see it

Like any astronomical target, HIP 18606 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 18606 b is a trash exoplanet

HIP 18606 b scores 9 points on Spacedle's rarity scale, which places it in the trash tier. Another 6 points would lift it into a rarer tier.

That score comes from 2 science badges — Confirmed exoplanet and Gas giant — 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.