Common exoplanet 18 EP

HD 80869 b

RA 140.7913° · Dec 33.9048° · exoplanet

Loading sky survey…

🌌 View in 3D star map

Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 3 badges

18 pts · Common

Common 24 pts → Uncommon

Eccentric orbit +9
Confirmed exoplanet +5
Gas giant +4

Total score 18

6 more points to reach Uncommon.

Badges

Confirmed exoplanet · +5
Gas giant · +4
Eccentric orbit · +9

Trivia

Could we get there?

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

Getting there

Aboard Voyager 1. ≈ 4.9 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 434.9 thousand years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 2785 years in a starship at a tenth of light speed.
Distance. 279 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 1747.

Saying hello

Say hello. A radio message and its reply would take 557 years round-trip.

Standing on it

A year here. A full year lasts about 4.8 Earth years.

By the numbers

Size. About 12.8× the width of Earth.
Volume. About 2097 Earths could fit inside it.
Mass. Roughly 1610× Earth's mass — about 5.1 Jupiters.
Your weight. You'd weigh about 9.8× your Earth weight standing here.
Temperature. A frigid -70°C — colder than dry ice.

How we found it

Discovery. Found by Haute-Provence Observatory using the radial velocity method.

Cosmic context

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

Properties

density gcc: 4.22
discovery facility: Haute-Provence Observatory
discovery method: Radial Velocity
dist ly: 278.5212
eccentricity: 0.924
eq temp k: 203.2
insolation: 0.142
mass earth: 1609.8009
name: HD 80869 b
orbital period days: 1752.9207
radius earth: 12.8
sys num planets: 1

About HD 80869 b

HD 80869 b is a common exoplanet. It lies about 278.5 light-years from Earth, has an equilibrium temperature near 203 K, spans roughly 12.8 Earth radii and weighs about 1,609.8 Earth masses.

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

How to see it

Like any astronomical target, HD 80869 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 80869 b is a common exoplanet

HD 80869 b scores 18 points on Spacedle's rarity scale, which places it in the common tier. Another 6 points would lift it into a rarer tier.

That score comes from 3 science badges — Confirmed exoplanet, Gas giant 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.