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Epic exoplanet 57 EP

HIP 8541 b

RA 27.5272° · Dec -54.4652° · exoplanet

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Score breakdown

· 5 badges
57 pts · Epic
Epic 78 pts → Anomaly
  • In the habitable zone +30
  • Two suns in its sky +12
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 57

21 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • In the habitable zone · +30
  • Gas giant · +4
  • Multi-planet system · +6
  • Two suns in its sky · +12

Trivia

What makes it special

  • Goldilocks zone. Sits where it's neither too hot nor too cold — liquid water could exist on a surface here.

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.
  • What the zone means. The habitable zone is only about temperature: it is the band where liquid water could survive on a surface. It is a promising address, not evidence of anything living.
  • Crowded system. One of at least 2 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 7.9 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 October — that's when to go looking.

Properties

density gcc
6.73
diameter km
160728.12
discovery facility
Multiple Observatories
discovery method
Radial Velocity
discovery year
2016
dist ly
505.9364
eccentricity
0.36
eq temp k
305.12
habitable zone
yes
host star teff
4672
inclination
90.904
insolation
1.4683
mag
7.88
mass earth
2451.7283
multi star system
yes
name
HIP 8541 b
orbital period days
1852.1439
radius earth
12.6
semi major au
3.729
spect
K2 III/IV
sys num planets
2
sys num stars
2

About HIP 8541 b

HIP 8541 b is an epic exoplanet. It lies about 505.9 light-years from Earth, shines at apparent magnitude 7.88, has spectral type K2 III/IV and has an equilibrium temperature near 305 K.

Sits where it's neither too hot nor too cold — liquid water could exist on a surface here.

How to see it

At apparent magnitude 7.88, it is an easy target for binoculars.

Like any astronomical target, HIP 8541 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 8541 b is an epic exoplanet

HIP 8541 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 5 science badges — Confirmed exoplanet, In the habitable zone, Gas giant, Multi-planet system 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.