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Epic exoplanet 66 EP

ROXs 12 b

RA 246.6168° · Dec -25.4467° · exoplanet

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Score breakdown

· 7 badges
66 pts · Epic
Epic 78 pts → Anomaly
  • Directly imaged +16
  • Two suns in its sky +12
  • Orbits beyond Neptune's distance +12
  • Eccentric orbit +9
  • Frozen world +8
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 66

12 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Frozen world · +8
  • Eccentric orbit · +9
  • Directly imaged · +16
  • Two suns in its sky · +12
  • Orbits beyond Neptune's distance · +12

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 14.8 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • 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 May — that's when to go looking.

Could we get there?

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

Properties

density gcc
15.4
diameter km
155625.64
discovery facility
W. M. Keck Observatory
discovery method
Imaging
discovery year
2013
dist ly
445.6922
eccentricity
0.83
eq temp k
13.23
host star teff
3850
insolation
0
mag
14.763
mass earth
5085
multi star system
yes
name
ROXs 12 b
radius earth
12.2
semi major au
210
spect
M0
sys num planets
1
sys num stars
2

About ROXs 12 b

ROXs 12 b is an epic exoplanet. It lies about 445.7 light-years from Earth, shines at apparent magnitude 14.76, has spectral type M0 and has an equilibrium temperature near 13 K.

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

How to see it

At apparent magnitude 14.76, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, ROXs 12 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 ROXs 12 b is an epic exoplanet

ROXs 12 b scores 66 points on Spacedle's rarity scale, which places it in the epic tier. Another 12 points would lift it into a rarer tier.

That score comes from 7 science badges — Confirmed exoplanet, Gas giant, Frozen world, Eccentric orbit, Directly imaged, Two suns in its sky and Orbits beyond Neptune's distance — 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.