Common exoplanet 19 EP

HIP 29442 c

RA 93.0578° · Dec -14.6493° · exoplanet

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Score breakdown

· 3 badges

19 pts · Common

Common 24 pts → Uncommon

Super-Earth +8
Multi-planet system +6
Confirmed exoplanet +5

Total score 19

5 more points to reach Uncommon.

Badges

Confirmed exoplanet · +5
Super-Earth · +8
Multi-planet system · +6

Trivia

Could we get there?

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

Getting there

Aboard Voyager 1. ≈ 3.9 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 347.3 thousand years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 2224 years in a starship at a tenth of light speed.
Distance. 222 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 1804.

Saying hello

Say hello. A radio message and its reply would take 445 years round-trip.

Standing on it

A year here. A full year lasts just 3.5 Earth days.

By the numbers

Size. About 1.6× the width of Earth.
Mass. About 4.5× the mass of Earth.
Your weight. You'd weigh about 1.9× your Earth weight standing here.
Temperature. Around 850°C — hotter than a self-cleaning oven.

How we found it

Discovery. Found by Paranal Observatory using the radial velocity method.

Cosmic context

Crowded system. One of at least 3 planets orbiting its star.

Properties

density gcc: 6.3
discovery facility: Paranal Observatory
discovery method: Radial Velocity
dist ly: 222.4123
eq temp k: 1123
insolation: 451
mass earth: 4.5
name: HIP 29442 c
orbital period days: 3.538
radius earth: 1.551
sys num planets: 3

About HIP 29442 c

HIP 29442 c is a common exoplanet. It lies about 222.4 light-years from Earth, has an equilibrium temperature near 1,123 K, spans roughly 1.55 Earth radii and weighs about 4.5 Earth masses.

One of at least 3 planets orbiting its star.

How to see it

Like any astronomical target, HIP 29442 c 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 HIP 29442 c is a common exoplanet

HIP 29442 c scores 19 points on Spacedle's rarity scale, which places it in the common tier. Another 5 points would lift it into a rarer tier.

That score comes from 3 science badges — Confirmed exoplanet, Super-Earth and Multi-planet system — 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.