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Epic exoplanet 57 EP

HIP 54515 b

RA 167.3066° · Dec -1.3333° · exoplanet

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Score breakdown

· 6 badges
57 pts · Epic
Epic 78 pts → Anomaly
  • Directly imaged +16
  • Orbits a hot blue-white star +14
  • Long-period world +10
  • Frozen world +8
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 57

21 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Frozen world · +8
  • Long-period world · +10
  • Directly imaged · +16
  • Orbits a hot blue-white star · +14

Trivia

What makes it special

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

Hard to believe

  • Denser than iron. It is packed tighter than solid iron — whatever it is made of, it is not ordinary rock.

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.

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 6.8 it is just past naked-eye reach — ordinary binoculars will pull it in.
  • Seen from everywhere. It sits almost on the celestial equator, so it can be seen from essentially anywhere on Earth.
  • Best time of year. It stands highest in the middle of the night around March — that's when to go looking.

Could we get there?

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

Properties

density gcc
17
diameter km
155625.64
discovery facility
Subaru Telescope
discovery method
Imaging
discovery year
2026
dist ly
270.0901
eccentricity
0.42
eq temp k
100.72
host star teff
8100
inclination
129.6
insolation
0.0171
mag
6.807
mass earth
5625.5628
name
HIP 54515 b
orbital period days
33000
radius earth
12.2
semi major au
24.8
spect
A5 V
sys num planets
1
sys num stars
1

About HIP 54515 b

HIP 54515 b is an epic exoplanet. It lies about 270.1 light-years from Earth, shines at apparent magnitude 6.81, has spectral type A5 V and has an equilibrium temperature near 101 K.

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

How to see it

At apparent magnitude 6.81, it is an easy target for binoculars.

Like any astronomical target, HIP 54515 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 54515 b is an epic exoplanet

HIP 54515 b scores 57 points on Spacedle's rarity scale, which places it in the epic tier. Another 21 points would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, Gas giant, Frozen world, Long-period world, Directly imaged and Orbits a hot blue-white 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.