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Rare exoplanet 47 EP

HD 195019 b

RA 307.0792° · Dec 18.7693° · exoplanet

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Score breakdown

· 5 badges
47 pts · Rare
Rare 50 pts → Epic
  • Found before the year 2000 +18
  • Two suns in its sky +12
  • Orbits a Sun-like star +8
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 47

3 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Orbits a Sun-like star · +8
  • Two suns in its sky · +12
  • Found before the year 2000 · +18

Trivia

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.

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 6.9 it is just past naked-eye reach — ordinary binoculars will pull it in.
  • 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 July — 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. ≈ 2.2 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
3.16
diameter km
165830.6
discovery facility
Lick Observatory
discovery method
Radial Velocity
discovery year
1998
dist ly
122.8568
eccentricity
0.01
eq temp k
901.66
host star teff
5751
insolation
109.862
mag
6.8759
mass earth
1264.9634
multi star system
yes
name
HD 195019 b
orbital period days
18.2013
radius earth
13
semi major au
0.14
spect
G3 IV-V
sys num planets
1
sys num stars
2

About HD 195019 b

HD 195019 b is a rare exoplanet. It lies about 122.9 light-years from Earth, shines at apparent magnitude 6.88, has spectral type G3 IV-V and has an equilibrium temperature near 902 K.

It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.

How to see it

At apparent magnitude 6.88, it is an easy target for binoculars.

Like any astronomical target, HD 195019 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 195019 b is a rare exoplanet

HD 195019 b scores 47 points on Spacedle's rarity scale, which places it in the rare tier. Another 3 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Gas giant, Orbits a Sun-like star, Two suns in its sky and Found before the year 2000 — 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.