← Back to dex
Trash exoplanet 9 EP

HD 122562 c

RA 210.5887° · Dec 20.8810° · exoplanet

Loading sky survey…
🌌 View in 3D star map
Tonight’s visibility

Computing the sky for your location…

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

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 7.7 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 April — that's when to go looking.

Could we get there?

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

Properties

density gcc
0.39
diameter km
128837.62
discovery facility
Multiple Observatories
discovery method
Radial Velocity
discovery year
2022
dist ly
173.6872
eccentricity
0.228
eq temp k
552.02
host star teff
4956
insolation
15.4863
mag
7.659
mass earth
73.1005
name
HD 122562 c
orbital period days
84.9628
radius earth
10.1
semi major au
0.406
sys num planets
1
sys num stars
1

Nearby objects

About HD 122562 c

HD 122562 c is a trash exoplanet. It lies about 173.7 light-years from Earth, shines at apparent magnitude 7.66, has an equilibrium temperature near 552 K and spans roughly 10.1 Earth radii.

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 7.66, it is an easy target for binoculars.

Like any astronomical target, HD 122562 c 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 122562 c is a trash exoplanet

HD 122562 c 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.