Rare exoplanet 33 EP

HD 169142 b

RA 276.1241° · Dec -29.7805° · exoplanet

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Score breakdown

· 4 badges

33 pts · Rare

Rare 46 pts → Epic

Directly imaged +16
Frozen world +8
Confirmed exoplanet +5
Gas giant +4

Total score 33

13 more points to reach Epic.

Badges

Confirmed exoplanet · +5
Gas giant · +4
Frozen world · +8
Directly imaged · +16

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. ≈ 6.5 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 578.5 thousand years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 3705 years in a starship at a tenth of light speed.
Distance. 371 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 1655.

Saying hello

Say hello. A radio message and its reply would take 741 years round-trip.

By the numbers

Size. About 13.1× the width of Earth.
Volume. About 2248 Earths could fit inside it.
Mass. Roughly 953× Earth's mass — about 3 Jupiters.
Your weight. You'd weigh about 5.6× your Earth weight standing here.
Temperature. A frigid -202°C — colder than dry ice.

How we found it

Discovery. Found by Paranal Observatory using the imaging method.

Properties

density gcc: 2.33
discovery facility: Paranal Observatory
discovery method: Imaging
dist ly: 370.5132
eq temp k: 71.02
insolation: 0.0042
mass earth: 953.4852
name: HD 169142 b
radius earth: 13.1
sys num planets: 1

About HD 169142 b

HD 169142 b is a rare exoplanet. It lies about 370.5 light-years from Earth, has an equilibrium temperature near 71 K, spans roughly 13.1 Earth radii and weighs about 953.49 Earth masses.

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

How to see it

Like any astronomical target, HD 169142 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 169142 b is a rare exoplanet

HD 169142 b scores 33 points on Spacedle's rarity scale, which places it in the rare tier. Another 13 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Gas giant, Frozen world and Directly imaged — 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.