Uncommon exoplanet 28 EP

HR 5183 b

RA 206.7358° · Dec 6.3499° · exoplanet

Loading sky survey…

🌌 View in 3D star map

Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 4 badges

28 pts · Uncommon

Uncommon 33 pts → Rare

Long-period world +10
Eccentric orbit +9
Confirmed exoplanet +5
Gas giant +4

Total score 28

5 more points to reach Rare.

Badges

Confirmed exoplanet · +5
Gas giant · +4
Long-period world · +10
Eccentric orbit · +9

Trivia

Could we get there?

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

Getting there

Aboard Voyager 1. ≈ 1.8 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 160.2 thousand years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 1026 years in a starship at a tenth of light speed.
Distance. 103 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 1923.

Saying hello

Say hello. A radio message and its reply would take 205 years round-trip.

Standing on it

A year here. A full year lasts about 73.9 Earth years.

By the numbers

Size. About 13.1× the width of Earth.
Volume. About 2248 Earths could fit inside it.
Mass. Roughly 1052× Earth's mass — about 3.3 Jupiters.
Your weight. You'd weigh about 6.1× your Earth weight standing here.
Temperature. A frigid -102°C — colder than dry ice.

How we found it

Discovery. Found by Multiple Observatories using the radial velocity method.

Cosmic context

Wild orbit. Its highly elliptical path swings between scorching and frozen each lap.

Properties

density gcc: 2.57
discovery facility: Multiple Observatories
discovery method: Radial Velocity
dist ly: 102.611
eccentricity: 0.84
eq temp k: 171
insolation: 0.0077
mass earth: 1052.012
name: HR 5183 b
orbital period days: 27000
radius earth: 13.1
sys num planets: 1

About HR 5183 b

HR 5183 b is an uncommon exoplanet. It lies about 102.6 light-years from Earth, has an equilibrium temperature near 171 K, spans roughly 13.1 Earth radii and weighs about 1,052.01 Earth masses.

Its highly elliptical path swings between scorching and frozen each lap.

How to see it

Like any astronomical target, HR 5183 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 HR 5183 b is an uncommon exoplanet

HR 5183 b scores 28 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 5 points would lift it into a rarer tier.

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