Rare exoplanet 42 EP

HD 219134 g

RA 348.3372° · Dec 57.1696° · exoplanet

Loading sky survey…

🌌 View in 3D star map

Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 5 badges

42 pts · Rare

Rare 46 pts → Epic

Richly packed system +14
Nearby (<25 ly) +12
Multi-planet system +6
Confirmed exoplanet +5
Sub-Neptune +5

Total score 42

4 more points to reach Epic.

Badges

Confirmed exoplanet · +5
Sub-Neptune · +5
Multi-planet system · +6
Richly packed system · +14
Nearby (<25 ly) · +12

Trivia

What makes it special

Packed system. Crammed into a system of five or more planets.

Could we get there?

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

Getting there

Aboard Voyager 1. ≈ 374.3 thousand years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 33.3 thousand years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 213 years in a starship at a tenth of light speed.
Distance. 21.3 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 2005.

Saying hello

Say hello. A radio message and its reply would take 42.6 years round-trip.

Standing on it

A year here. A full year lasts just 94.2 Earth days.

By the numbers

Size. About 3.3× the width of Earth.
Volume. About 35.3 Earths could fit inside it.
Mass. About 10.8× the mass of Earth.
Your weight. You'd weigh about 1.0× your Earth weight standing here.
Temperature. A scorching 66°C on average.

How we found it

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

Cosmic context

Crowded system. One of at least 6 planets orbiting its star.

Properties

density gcc: 1.68
discovery facility: Multiple Observatories
discovery method: Radial Velocity
dist ly: 21.3021
eccentricity: 0
eq temp k: 339.34
insolation: 2.2009
mass earth: 10.8062
name: HD 219134 g
orbital period days: 94.2
radius earth: 3.28
sys num planets: 6

About HD 219134 g

HD 219134 g is a rare exoplanet. It lies about 21.3 light-years from Earth, has an equilibrium temperature near 339 K, spans roughly 3.28 Earth radii and weighs about 10.81 Earth masses.

Crammed into a system of five or more planets.

How to see it

Like any astronomical target, HD 219134 g 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 219134 g is a rare exoplanet

HD 219134 g scores 42 points on Spacedle's rarity scale, which places it in the rare tier. Another 4 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Sub-Neptune, Multi-planet system, Richly packed system and Nearby (<25 ly) — 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.