← Back to dex
Rare exoplanet 36 EP

pi Men d

RA 84.2993° · Dec -80.4646° · exoplanet

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

Computing the sky for your location…

Score breakdown

· 5 badges
36 pts · Rare
Rare 50 pts → Epic
  • Its star is visible to the naked eye +12
  • Orbits a Sun-like star +8
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Sub-Neptune +5
Total score 36

14 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Sub-Neptune · +5
  • Multi-planet system · +6
  • Its star is visible to the naked eye · +12
  • Orbits a Sun-like star · +8

Trivia

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 3 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 5.7 you can see it with your own eyes from a dark site.
  • Southern sky only. So far south it never rises for most of the northern hemisphere. To see it you'd have to travel to Chile, South Africa or Australia.
  • 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.

Getting there

  • Aboard Voyager 1. ≈ 1 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
1.43
diameter km
47453.064
discovery facility
La Silla Observatory
discovery method
Radial Velocity
discovery year
2022
dist ly
59.5894
eccentricity
0.22
eq temp k
443.55
host star teff
5998
insolation
5.6398
mag
5.65
mass earth
13.38
name
pi Men d
orbital period days
124.64
radius earth
3.72
semi major au
0.506
spect
G0 V
sys num planets
3
sys num stars
1

About pi Men d

pi Men d is a rare exoplanet. It lies about 59.6 light-years from Earth, shines at apparent magnitude 5.65, has spectral type G0 V and has an equilibrium temperature near 444 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 5.65, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, pi Men 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 pi Men d is a rare exoplanet

pi Men 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 5 science badges — Confirmed exoplanet, Sub-Neptune, Multi-planet system, Its star is visible to the naked eye and Orbits a Sun-like star — 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.