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Uncommon exoplanet 31 EP

HD 134606 d

RA 228.8104° · Dec -70.5203° · exoplanet

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Score breakdown

· 4 badges
31 pts · Uncommon
Uncommon 34 pts → Rare
  • Richly packed system +14
  • Orbits a Sun-like star +8
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 31

3 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Richly packed system · +14
  • Orbits a Sun-like star · +8

Trivia

Hard to believe

  • It would float. It is less dense than water. Drop it in a big enough ocean and the whole world would bob on the surface.

What it actually is

  • What it is made of. Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.
  • Crowded system. One of at least 5 planets orbiting its star.

Sense of scale

  • In perspective. Inside our stellar backyard: every radio broadcast humanity has ever made has already swept past it.

Find it in the sky

  • How to spot it. At magnitude 6.9 it is just past naked-eye reach — ordinary binoculars will pull it in.
  • Southern sky only. So far south it never rises for most of the northern hemisphere. To see it you'd have to travel to Chile, South Africa or Australia.
  • 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.

Properties

density gcc
0.563
diameter km
96819.558
discovery facility
Multiple Observatories
discovery method
Radial Velocity
discovery year
2024
dist ly
87.3801
eccentricity
0.092
eq temp k
207.68
host star teff
5576
insolation
0.3082
mag
6.86
mass earth
44.8
name
HD 134606 d
orbital period days
966.5
radius earth
7.59
semi major au
1.941
spect
G5IV
sys num planets
5
sys num stars
1

About HD 134606 d

HD 134606 d is an uncommon exoplanet. It lies about 87.4 light-years from Earth, shines at apparent magnitude 6.86, has spectral type G5IV and has an equilibrium temperature near 208 K.

Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.

How to see it

At apparent magnitude 6.86, it is an easy target for binoculars.

Like any astronomical target, HD 134606 d 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 134606 d is an uncommon exoplanet

HD 134606 d scores 31 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 3 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Gas giant, Richly packed system and Orbits a Sun-like star — 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.