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Uncommon exoplanet 27 EP

HD 93083 b

RA 161.0867° · Dec -33.5777° · exoplanet

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Score breakdown

· 4 badges
27 pts · Uncommon
Uncommon 34 pts → Rare
  • Puffy low-density world +12
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 27

7 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Puffy low-density world · +12
  • 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

  • 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 8.3 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.

Could we get there?

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

Properties

density gcc
0.269
diameter km
182413.66
discovery facility
La Silla Observatory
discovery method
Radial Velocity
discovery year
2005
dist ly
93.0063
eccentricity
0.118
eq temp k
311.57
host star teff
5033.8
insolation
1.59
mag
8.3
mass earth
143.3406
name
HD 93083 b
orbital period days
144.72
radius earth
14.3
semi major au
0.508
spect
K2 IV-V
sys num planets
2
sys num stars
1

About HD 93083 b

HD 93083 b is an uncommon exoplanet. It lies about 93 light-years from Earth, shines at apparent magnitude 8.3, has spectral type K2 IV-V and has an equilibrium temperature near 312 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 8.3, it is an easy target for binoculars.

Like any astronomical target, HD 93083 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 93083 b is an uncommon exoplanet

HD 93083 b scores 27 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 7 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Gas giant, Puffy low-density world 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.