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Uncommon exoplanet 33 EP

HD 113996 b

RA 196.7949° · Dec 27.6244° · exoplanet

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Score breakdown

· 4 badges
33 pts · Uncommon
Uncommon 34 pts → Rare
  • Its star is visible to the naked eye +12
  • Two suns in its sky +12
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 33

1 more point to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Its star is visible to the naked eye · +12
  • Two suns in its sky · +12

Trivia

What it actually is

  • 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.

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 4.8 you can see it with your own eyes from a dark site.
  • Northern sky. It rides the northern half of the sky — an easier target the further north you are.
  • Best time of year. It stands highest in the middle of the night around April — that's when to go looking.

Could we get there?

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

Getting there

  • Aboard Voyager 1. ≈ 6.7 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 592.4 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

density gcc
5.37
diameter km
162003.74
discovery facility
Bohyunsan Optical Astronomical Observatory
discovery method
Radial Velocity
discovery year
2017
dist ly
379.4303
eccentricity
0.28
eq temp k
798.69
host star teff
4181
insolation
113.6719
mag
4.7704
mass earth
2002.329
multi star system
yes
name
HD 113996 b
orbital period days
610.2
radius earth
12.7
semi major au
1.6
spect
K5 III
sys num planets
1
sys num stars
2

About HD 113996 b

HD 113996 b is an uncommon exoplanet. It lies about 379.4 light-years from Earth, shines at apparent magnitude 4.77, has spectral type K5 III and has an equilibrium temperature near 799 K.

Its density says rock, though lighter than Earth's mix: probably less iron, or a thick shell of water and ice over the top.

How to see it

At apparent magnitude 4.77, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, HD 113996 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 HD 113996 b is an uncommon exoplanet

HD 113996 b scores 33 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 1 point would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Gas giant, 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.