Rare exoplanet 42 EP

HD 83443 c

RA 144.2994° · Dec -43.2727° · exoplanet

Loading sky survey…

🌌 View in 3D star map

Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 6 badges

42 pts · Rare

Rare 46 pts → Epic

Long-period world +10
Eccentric orbit +9
Frozen world +8
Multi-planet system +6
Confirmed exoplanet +5
Gas giant +4

Total score 42

4 more points to reach Epic.

Badges

Confirmed exoplanet · +5
Gas giant · +4
Frozen world · +8
Long-period world · +10
Eccentric orbit · +9
Multi-planet system · +6

Trivia

What makes it special

Frozen world. A deep-frozen world far from its star's warmth.

Could we get there?

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

Getting there

Aboard Voyager 1. ≈ 2.3 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 208.3 thousand years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 1334 years in a starship at a tenth of light speed.
Distance. 133 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 1893.

Saying hello

Say hello. A radio message and its reply would take 267 years round-trip.

Standing on it

A year here. A full year lasts about 22.6 Earth years.

By the numbers

Size. About 13.6× the width of Earth.
Volume. About 2515 Earths could fit inside it.
Mass. Roughly 477× Earth's mass — about 1.5 Jupiters.
Your weight. You'd weigh about 2.6× your Earth weight standing here.
Temperature. A frigid -183°C — colder than dry ice.

How we found it

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

Cosmic context

Crowded system. One of at least 2 planets orbiting its star.

Properties

density gcc: 1.04
discovery facility: Multiple Observatories
discovery method: Radial Velocity
dist ly: 133.3949
eccentricity: 0.76
eq temp k: 89.95
insolation: 0.0123
mass earth: 476.7426
name: HD 83443 c
orbital period days: 8241
radius earth: 13.6
sys num planets: 2

About HD 83443 c

HD 83443 c is a rare exoplanet. It lies about 133.4 light-years from Earth, has an equilibrium temperature near 90 K, spans roughly 13.6 Earth radii and weighs about 476.74 Earth masses.

A deep-frozen world far from its star's warmth.

How to see it

Like any astronomical target, HD 83443 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 HD 83443 c is a rare exoplanet

HD 83443 c 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 6 science badges — Confirmed exoplanet, Gas giant, Frozen world, Long-period world, Eccentric orbit 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.