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Rare exoplanet 43 EP

gam1 Leo b

RA 154.9932° · Dec 19.8414° · exoplanet

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Score breakdown

· 5 badges
43 pts · Rare
Rare 50 pts → Epic
  • Its star is visible to the naked eye +12
  • Two suns in its sky +12
  • Hot Jupiter +10
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 43

7 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Hot Jupiter · +10
  • 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. 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 2 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 February — 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. ≈ 2.3 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 203.1 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

density gcc
7.85
diameter km
159452.5
discovery facility
Bohyunsan Optical Astronomical Observatory
discovery method
Radial Velocity
discovery year
2009
dist ly
130.0981
eccentricity
0.144
eq temp k
1080.7
host star teff
4330
insolation
228.5105
mag
1.9951
mass earth
2790.43
multi star system
yes
name
gam1 Leo b
orbital period days
428.5
radius earth
12.5
semi major au
1.19
spect
K1 IIIb Fe-0.5
sys num planets
1
sys num stars
2

About gam1 Leo b

gam1 Leo b is a rare exoplanet. It lies about 130.1 light-years from Earth, shines at apparent magnitude 2, has spectral type K1 IIIb Fe-0.5 and has an equilibrium temperature near 1,081 K.

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

How to see it

At apparent magnitude 2, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, gam1 Leo 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 gam1 Leo b is a rare exoplanet

gam1 Leo b scores 43 points on Spacedle's rarity scale, which places it in the rare tier. Another 7 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Gas giant, Hot Jupiter, 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.