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Epic exoplanet 69 EP

HD 4732 c

RA 12.3085° · Dec -24.1369° · exoplanet

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Score breakdown

· 6 badges
69 pts · Epic
Epic 78 pts → Anomaly
  • In the habitable zone +30
  • Its star is visible to the naked eye +12
  • Two suns in its sky +12
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 69

9 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • In the habitable zone · +30
  • Gas giant · +4
  • Multi-planet system · +6
  • Its star is visible to the naked eye · +12
  • 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. 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.
  • 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 5.9 you can see it with your own eyes from a dark site.
  • 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
2.61
diameter km
167106.22
discovery facility
Multiple Observatories
discovery method
Radial Velocity
discovery year
2012
dist ly
178.6816
eccentricity
0.187
eq temp k
243.69
habitable zone
yes
host star teff
4898
insolation
0.5881
mag
5.9
mass earth
1069.4926
multi star system
yes
name
HD 4732 c
orbital period days
3184.2
radius earth
13.1
semi major au
4.725
spect
K0 IV
sys num planets
2
sys num stars
2

About HD 4732 c

HD 4732 c is an epic exoplanet. It lies about 178.7 light-years from Earth, shines at apparent magnitude 5.9, has spectral type K0 IV and has an equilibrium temperature near 244 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 5.9, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, HD 4732 c 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 4732 c is an epic exoplanet

HD 4732 c scores 69 points on Spacedle's rarity scale, which places it in the epic tier. Another 9 points would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, In the habitable zone, Gas giant, Multi-planet system, Its star is visible to the naked eye 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.