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Rare exoplanet 35 EP

HIP 39330 b

RA 120.6117° · Dec -46.3353° · 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. Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.

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 7.5 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. ≈ 2.1 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
1.19
diameter km
172208.7
discovery facility
Multiple Facilities
discovery method
Radial Velocity
discovery year
2026
dist ly
118.7071
eccentricity
0.078
eq temp k
125.05
host star teff
5748
inclination
55
insolation
0.044
mag
7.52
mass earth
530.7734
name
HIP 39330 b
orbital period days
4650
radius earth
13.5
semi major au
5.05
spect
G5 V
sys num planets
1
sys num stars
1

About HIP 39330 b

HIP 39330 b is a rare exoplanet. It lies about 118.7 light-years from Earth, shines at apparent magnitude 7.52, has spectral type G5 V and has an equilibrium temperature near 125 K.

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

How to see it

At apparent magnitude 7.52, it is an easy target for binoculars.

Like any astronomical target, HIP 39330 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 HIP 39330 b is a rare exoplanet

HIP 39330 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.