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Rare exoplanet 36 EP

HD 110067 d

RA 189.8392° · Dec 20.0273° · exoplanet

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Score breakdown

· 4 badges
36 pts · Rare
Rare 50 pts → Epic
  • Richly packed system +14
  • Two suns in its sky +12
  • Confirmed exoplanet +5
  • Sub-Neptune +5
Total score 36

14 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Sub-Neptune · +5
  • Richly packed system · +14
  • Two suns in its sky · +12

Trivia

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. Too light to be solid rock and too heavy to be all gas: most likely a deep global ocean or a thick steamy envelope over a rocky core.
  • Crowded system. One of at least 6 planets orbiting its star.

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 8.4 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 March — that's when to go looking.

Could we get there?

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

Properties

density gcc
2.02
diameter km
36380.6824
discovery facility
Multiple Observatories
discovery method
Transit
discovery year
2023
dist ly
104.8869
eq temp k
602
host star teff
5266
inclination
89.248
insolation
23.4102
mag
8.419
mass earth
8.52
multi star system
yes
name
HD 110067 d
orbital period days
20.5196
radius earth
2.852
semi major au
0.1362
spect
K0.0 V
sys num planets
6
sys num stars
3

About HD 110067 d

HD 110067 d is a rare exoplanet. It lies about 104.9 light-years from Earth, shines at apparent magnitude 8.42, has spectral type K0.0 V and has an equilibrium temperature near 602 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 8.42, it is an easy target for binoculars.

Like any astronomical target, HD 110067 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 110067 d is a rare exoplanet

HD 110067 d scores 36 points on Spacedle's rarity scale, which places it in the rare tier. Another 14 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Sub-Neptune, Richly packed system and Two suns in its sky — 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.