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Common exoplanet 15 EP

HD 104067 b

RA 179.7924° · Dec -20.3556° · exoplanet

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Score breakdown

· 3 badges
15 pts · Common
Common 22 pts → Uncommon
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 15

7 more points to reach Uncommon.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Multi-planet system · +6

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

  • Hugging its star. It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.
  • 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 2 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 7.9 it is just past naked-eye reach — ordinary binoculars will pull it in.
  • Southern sky. It rides the southern half of the sky — an easier target the further south you are.
  • Best time of year. It stands highest in the middle of the night around March — that's when to go looking.

Properties

density gcc
0.438
diameter km
117357.04
discovery facility
La Silla Observatory
discovery method
Radial Velocity
discovery year
2011
dist ly
66.4158
eccentricity
0.123
eq temp k
407.83
host star teff
4952
insolation
4.2965
mag
7.92
mass earth
62.1
name
HD 104067 b
orbital period days
55.851
radius earth
9.2
semi major au
0.2674
spect
K2V
sys num planets
2
sys num stars
1

Nearby objects

About HD 104067 b

HD 104067 b is a common exoplanet. It lies about 66.4 light-years from Earth, shines at apparent magnitude 7.92, has spectral type K2V and has an equilibrium temperature near 408 K.

It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.

How to see it

At apparent magnitude 7.92, it is an easy target for binoculars.

Like any astronomical target, HD 104067 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 104067 b is a common exoplanet

HD 104067 b scores 15 points on Spacedle's rarity scale, which places it in the common tier. Another 7 points would lift it into a rarer tier.

That score comes from 3 science badges — Confirmed exoplanet, Gas giant and Multi-planet system — 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.