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Uncommon exoplanet 30 EP

HD 45652 b

RA 97.3059° · Dec 10.9336° · exoplanet

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Score breakdown

· 4 badges
30 pts · Uncommon
Uncommon 34 pts → Rare
  • Puffy low-density world +12
  • Eccentric orbit +9
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 30

4 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Eccentric orbit · +9
  • Puffy low-density world · +12

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.

Sense of scale

  • In perspective. Far away by human standards, yet still a local address inside the Milky Way's spiral arms.

Find it in the sky

  • How to spot it. At magnitude 8.1 it is just past naked-eye reach — ordinary binoculars will pull it in.
  • Northern sky. It rides the northern half of the sky — an easier target the further north you are.
  • Best time of year. It stands highest in the middle of the night around December — that's when to go looking.

Could we get there?

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

Properties

density gcc
0.259
diameter km
182413.66
discovery facility
Haute-Provence Observatory
discovery method
Radial Velocity
discovery year
2008
dist ly
113.6787
eccentricity
0.607
eq temp k
508.4
host star teff
5294
insolation
11.2332
mag
8.1
mass earth
137.6204
name
HD 45652 b
orbital period days
44.073
radius earth
14.3
semi major au
0.237
spect
G8/K0
sys num planets
1
sys num stars
1

About HD 45652 b

HD 45652 b is an uncommon exoplanet. It lies about 113.7 light-years from Earth, shines at apparent magnitude 8.1, has spectral type G8/K0 and has an equilibrium temperature near 508 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 8.1, it is an easy target for binoculars.

Like any astronomical target, HD 45652 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 45652 b is an uncommon exoplanet

HD 45652 b scores 30 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 4 points would lift it into a rarer tier.

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