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Rare exoplanet 43 EP

HD 125612 d

RA 215.2227° · Dec -17.4818° · exoplanet

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Score breakdown

· 6 badges
43 pts · Rare
Rare 50 pts → Epic
  • Two suns in its sky +12
  • Frozen world +8
  • Orbits a Sun-like star +8
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 43

7 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Frozen world · +8
  • Multi-planet system · +6
  • Orbits a Sun-like star · +8
  • Two suns in its sky · +12

Trivia

What makes it special

  • Frozen world. A deep-frozen world, too far from its star's warmth for anything to stay liquid.

What it actually is

  • What it is made of. Denser than Earth — a solid world of rock and iron, with no meaningful atmosphere to speak of by mass.
  • Crowded system. One of at least 3 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 8.3 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 April — that's when to go looking.

Could we get there?

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

Properties

density gcc
6.12
diameter km
162003.74
discovery facility
La Silla Observatory
discovery method
Radial Velocity
discovery year
2009
dist ly
187.9334
eccentricity
0.115
eq temp k
147.48
host star teff
5900
inclination
88.195
insolation
0.0724
mag
8.31
mass earth
2281.3723
multi star system
yes
name
HD 125612 d
orbital period days
2822.727
radius earth
12.7
semi major au
3.982
spect
G3 V
sys num planets
3
sys num stars
2

About HD 125612 d

HD 125612 d is a rare exoplanet. It lies about 187.9 light-years from Earth, shines at apparent magnitude 8.31, has spectral type G3 V and has an equilibrium temperature near 147 K.

A deep-frozen world, too far from its star's warmth for anything to stay liquid.

How to see it

At apparent magnitude 8.31, it is an easy target for binoculars.

Like any astronomical target, HD 125612 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 125612 d is a rare exoplanet

HD 125612 d scores 43 points on Spacedle's rarity scale, which places it in the rare tier. Another 7 points would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, Gas giant, Frozen world, Multi-planet system, Orbits a Sun-like star 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.