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Rare exoplanet 35 EP

HD 135625 b

RA 229.4512° · Dec -45.9226° · exoplanet

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Score breakdown

· 5 badges
35 pts · Rare
Rare 50 pts → Epic
  • Long-period world +10
  • Frozen world +8
  • Orbits a Sun-like star +8
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 35

15 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Frozen world · +8
  • Long-period world · +10
  • Orbits a Sun-like star · +8

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. 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.

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.
  • 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 May — 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. ≈ 3.2 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
1.71
diameter km
169657.46
discovery facility
La Silla Observatory
discovery method
Radial Velocity
discovery year
2023
dist ly
184.3368
eccentricity
0.16
eq temp k
146.04
host star teff
6040.64
inclination
93
insolation
0.0758
mag
7.72
mass earth
731.0053
name
HD 135625 b
orbital period days
4055
radius earth
13.3
semi major au
5.4
spect
G3 IV/V
sys num planets
1
sys num stars
1

About HD 135625 b

HD 135625 b is a rare exoplanet. It lies about 184.3 light-years from Earth, shines at apparent magnitude 7.72, has spectral type G3 IV/V and has an equilibrium temperature near 146 K.

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

How to see it

At apparent magnitude 7.72, it is an easy target for binoculars.

Like any astronomical target, HD 135625 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 135625 b is a rare exoplanet

HD 135625 b scores 35 points on Spacedle's rarity scale, which places it in the rare tier. Another 15 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Gas giant, Frozen world, Long-period world 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.