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Rare exoplanet 35 EP

Luhman 16 b

RA 162.3283° · Dec -53.3194° · exoplanet

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Score breakdown

· 4 badges
35 pts · Rare
Rare 50 pts → Epic
  • Directly imaged +16
  • Long-period world +10
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 35

15 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Long-period world · +10
  • Directly imaged · +16

Trivia

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.

Find it in the sky

  • 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 March — that's when to go looking.

Standing on it

  • A year here. A full year lasts about 26.5 Earth years.

By the numbers

  • Size. About 11.9× the width of Earth.
  • Your weight. You'd weigh about 66.0× your Earth weight standing here.
  • Mass. Roughly 9344× Earth's mass — about 29.4 Jupiters.

Properties

density gcc
30.5
diameter km
151798.78
discovery facility
Multiple Observatories
discovery method
Imaging
discovery year
2017
eccentricity
0.344
inclination
79.92
insolation
0
mass earth
9344.1552
name
Luhman 16 b
orbital period days
9697
radius earth
11.9
semi major au
3.52
sys num planets
1
sys num stars
1

Nearby objects

About Luhman 16 b

Luhman 16 b is a rare exoplanet. It spans roughly 11.9 Earth radii, weighs about 9,344.16 Earth masses, completes an orbit every 9,697 days and belongs to a system of 1 known planets.

Denser than Earth — a solid world of rock and iron, with no meaningful atmosphere to speak of by mass.

How to see it

Like any astronomical target, Luhman 16 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 Luhman 16 b is a rare exoplanet

Luhman 16 b scores 35 points on Spacedle's rarity scale, which places it in the rare tier. Another 15 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Gas giant, Long-period world and Directly imaged — 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.