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Rare exoplanet 36 EP

HD 68475 b

RA 122.7193° · Dec -42.8129° · exoplanet

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Score breakdown

· 5 badges
36 pts · Rare
Rare 50 pts → Epic
  • Long-period world +10
  • Eccentric orbit +9
  • Frozen world +8
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 36

14 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Frozen world · +8
  • Long-period world · +10
  • Eccentric orbit · +9

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. Its density says rock, though lighter than Earth's mix: probably less iron, or a thick shell of water and ice over the top.

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 8.8 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 January — 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. ≈ 1.9 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
4.3
diameter km
163279.36
discovery facility
Las Campanas Observatory
discovery method
Radial Velocity
discovery year
2026
dist ly
109.033
eccentricity
0.62
eq temp k
79.88
host star teff
5022
inclination
87
insolation
0.0068
mag
8.78
mass earth
1639.9946
name
HD 68475 b
orbital period days
7832
radius earth
12.8
semi major au
7.27
spect
K2 VC
sys num planets
1
sys num stars
1

About HD 68475 b

HD 68475 b is a rare exoplanet. It lies about 109 light-years from Earth, shines at apparent magnitude 8.78, has spectral type K2 VC and has an equilibrium temperature near 80 K.

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

How to see it

At apparent magnitude 8.78, it is an easy target for binoculars.

Like any astronomical target, HD 68475 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 68475 b is a rare exoplanet

HD 68475 b 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, Gas giant, Frozen world, Long-period world and Eccentric orbit — 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.