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Epic exoplanet 57 EP

HD 10180 g

RA 24.4731° · Dec -60.5115° · exoplanet

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Score breakdown

· 4 badges
57 pts · Epic
Epic 78 pts → Anomaly
  • In the habitable zone +30
  • Richly packed system +14
  • Orbits a Sun-like star +8
  • Confirmed exoplanet +5
Total score 57

21 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • In the habitable zone · +30
  • Richly packed system · +14
  • Orbits a Sun-like star · +8

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 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 6 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 7.3 it is just past naked-eye reach — ordinary binoculars will pull it in.
  • Southern sky only. So far south it never rises for most of the northern hemisphere. To see it you'd have to travel to Chile, South Africa or Australia.
  • Best time of year. It stands highest in the middle of the night around October — that's when to go looking.

Could we get there?

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

Properties

discovery facility
La Silla Observatory
discovery method
Radial Velocity
discovery year
2010
dist ly
127.0727
eccentricity
0.263
eq temp k
251.27
habitable zone
yes
host star teff
5911
inclination
90
insolation
0.7317
mag
7.33
mass earth
3375.3377
name
HD 10180 g
orbital period days
604.67
semi major au
1.427
spect
G1 V
sys num planets
6
sys num stars
1

About HD 10180 g

HD 10180 g is an epic exoplanet. It lies about 127.1 light-years from Earth, shines at apparent magnitude 7.33, has spectral type G1 V and has an equilibrium temperature near 251 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 7.33, it is an easy target for binoculars.

Like any astronomical target, HD 10180 g 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 10180 g is an epic exoplanet

HD 10180 g 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 4 science badges — Confirmed exoplanet, In the habitable zone, Richly packed system 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.