Epic exoplanet 54 EP

HD 43197 b

RA 93.3993° · Dec -29.8972° · exoplanet

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Score breakdown

· 5 badges

54 pts · Epic

Epic 68 pts → Anomaly

In the habitable zone +30
Eccentric orbit +9
Multi-planet system +6
Confirmed exoplanet +5
Gas giant +4

Total score 54

14 more points to reach Anomaly.

Badges

Confirmed exoplanet · +5
In the habitable zone · +30
Gas giant · +4
Eccentric orbit · +9
Multi-planet system · +6

Trivia

What makes it special

Goldilocks zone. Sits where it's neither too hot nor too cold — liquid water could exist.

Could we get there?

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

Getting there

Aboard Voyager 1. ≈ 3.6 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 317.8 thousand years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 2036 years in a starship at a tenth of light speed.
Distance. 204 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 1822.

Saying hello

Say hello. A radio message and its reply would take 407 years round-trip.

Standing on it

A year here. A full year lasts just 309 Earth days.

By the numbers

Size. About 14.2× the width of Earth.
Volume. About 2863 Earths could fit inside it.
Mass. Roughly 176× Earth's mass — about 0.6 Jupiters.
Your weight. You'd weigh about 0.9× your Earth weight standing here.
Density. Less dense than water — drop it in a big enough ocean and it would float.
Temperature. A surprisingly temperate 10°C average.

How we found it

Discovery. Found by La Silla Observatory using the radial velocity method.

Cosmic context

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

Properties

density gcc: 0.337
discovery facility: La Silla Observatory
discovery method: Radial Velocity
dist ly: 203.5579
eccentricity: 0.742
eq temp k: 282.81
habitable zone: yes
insolation: 0.9377
mass earth: 175.7591
name: HD 43197 b
orbital period days: 308.9207
radius earth: 14.2
sys num planets: 2

About HD 43197 b

HD 43197 b is an epic exoplanet. It lies about 203.6 light-years from Earth, has an equilibrium temperature near 283 K, spans roughly 14.2 Earth radii and weighs about 175.76 Earth masses.

Sits where it's neither too hot nor too cold — liquid water could exist.

How to see it

Like any astronomical target, HD 43197 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 43197 b is an epic exoplanet

HD 43197 b scores 54 points on Spacedle's rarity scale, which places it in the epic tier. Another 14 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, In the habitable zone, Gas giant, 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.