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Anomaly exoplanet 99 EP

GJ 667 C f

RA 259.7511° · Dec -34.9978° · exoplanet

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Score breakdown

· 8 badges
99 pts · Anomaly
Anomaly 120 pts → Mythic
  • In the habitable zone +30
  • Richly packed system +14
  • Nearby (<25 ly) +12
  • Two suns in its sky +12
  • Disputed — it may not be there at all +10
  • Super-Earth +8
  • Orbits a red dwarf +8
  • Confirmed exoplanet +5
Total score 99

21 more points to reach Mythic.

Badges

  • Confirmed exoplanet · +5
  • Nearby (<25 ly) · +12
  • In the habitable zone · +30
  • Super-Earth · +8
  • Richly packed system · +14
  • Orbits a red dwarf · +8
  • Two suns in its sky · +12
  • Disputed — it may not be there at all · +10

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

  • Hugging its star. It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.
  • What it is made of. Its density says rock, though lighter than Earth's mix: probably less iron, or a thick shell of water and ice over the top.
  • 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 5 planets orbiting its star.

Sense of scale

  • In perspective. Inside our stellar backyard: every radio broadcast humanity has ever made has already swept past it.

Find it in the sky

  • How to spot it. At magnitude 10.6 you'll want a small backyard telescope.
  • Southern sky. It rides the southern half of the sky — an easier target the further south you are.

Properties

controversial
yes
density gcc
4.87
diameter km
18496.49
discovery facility
La Silla Observatory
discovery method
Radial Velocity
discovery year
2013
dist ly
23.6266
eccentricity
0.03
habitable zone
yes
host star teff
3350
insolation
0.5633
mag
10.602
mass earth
2.7
multi star system
yes
name
GJ 667 C f
orbital period days
39.026
radius earth
1.45
semi major au
0.156
spect
M1.5 V
sys num planets
5
sys num stars
3

About GJ 667 C f

GJ 667 C f is an anomaly exoplanet. It lies about 23.6 light-years from Earth, shines at apparent magnitude 10.6, has spectral type M1.5 V and spans roughly 1.45 Earth radii.

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 10.6, a small backyard telescope will bring it into view.

Like any astronomical target, GJ 667 C f 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 GJ 667 C f is an anomaly exoplanet

GJ 667 C f scores 99 points on Spacedle's rarity scale, which places it in the anomaly tier. Another 21 points would lift it into a rarer tier.

That score comes from 8 science badges — Confirmed exoplanet, Nearby (<25 ly), In the habitable zone, Super-Earth, Richly packed system, Orbits a red dwarf, Two suns in its sky and Disputed — it may not be there at all — 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.