Rare exoplanet 36 EP

HD 68475 b

RA 122.7193° · Dec -42.8129° · exoplanet

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Score breakdown

· 5 badges

36 pts · Rare

Rare 46 pts → Epic

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

Total score 36

10 more points to reach Epic.

Badges

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

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. ≈ 1.9 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 170.2 thousand years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 1090 years in a starship at a tenth of light speed.
Distance. 109 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 1917.

Saying hello

Say hello. A radio message and its reply would take 218 years round-trip.

Standing on it

A year here. A full year lasts about 21.4 Earth years.

By the numbers

Size. About 12.8× the width of Earth.
Volume. About 2097 Earths could fit inside it.
Mass. Roughly 1640× Earth's mass — about 5.2 Jupiters.
Your weight. You'd weigh about 10.0× your Earth weight standing here.
Temperature. A frigid -193°C — colder than dry ice.

How we found it

Discovery. Found by Las Campanas Observatory using the radial velocity method.

Properties

density gcc: 4.3
discovery facility: Las Campanas Observatory
discovery method: Radial Velocity
dist ly: 109.033
eccentricity: 0.62
eq temp k: 79.88
insolation: 0.0068
mass earth: 1639.9946
name: HD 68475 b
orbital period days: 7832
radius earth: 12.8
sys num planets: 1

About HD 68475 b

HD 68475 b is a rare exoplanet. It lies about 109 light-years from Earth, has an equilibrium temperature near 80 K, spans roughly 12.8 Earth radii and weighs about 1,639.99 Earth masses.

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

How to see it

Like any astronomical target, HD 68475 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 68475 b is a rare exoplanet

HD 68475 b scores 36 points on Spacedle's rarity scale, which places it in the rare tier. Another 10 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Gas giant, Frozen world, Long-period world 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.