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Anomaly exoplanet 70 EP

PZ Tel b

RA 283.2746° · Dec -50.1809° · exoplanet

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Score breakdown

· 7 badges
70 pts · Anomaly
Anomaly 95 pts → Mythic
  • Denser than iron +18
  • Directly imaged +16
  • Long-period world +10
  • Eccentric orbit +9
  • Frozen world +8
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 70

25 more points to reach Mythic.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Frozen world · +8
  • Long-period world · +10
  • Eccentric orbit · +9
  • Denser than iron · +18
  • Directly imaged · +16

Trivia

What makes it special

  • Frozen world. A deep-frozen world far from its star's warmth.
  • Heavyweight. Packed denser than solid iron.

Could we get there?

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

Getting there

  • Aboard Voyager 1. ≈ 2.7 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 239.7 thousand years even at the Parker Solar Probe's 192 km/s.
  • At 10% light speed. ≈ 1535 years in a starship at a tenth of light speed.
  • Distance. 154 light-years from Earth.

Look-back time

  • Look-back time. The light you'd see left around the year 1872.

Saying hello

  • Say hello. A radio message and its reply would take 307 years round-trip.

Standing on it

  • A year here. A full year lasts about 120 Earth years.

By the numbers

  • Size. About 11.9× the width of Earth.
  • Volume. About 1685 Earths could fit inside it.
  • Mass. Roughly 8581× Earth's mass — about 27 Jupiters.
  • Your weight. You'd weigh about 60.6× your Earth weight standing here.
  • Density. Denser than solid iron.
  • Temperature. A frigid -219°C — colder than dry ice.

How we found it

  • Discovery. Found by W. M. Keck Observatory using the imaging method.

Properties

density gcc
28
discovery facility
W. M. Keck Observatory
discovery method
Imaging
dist ly
153.5047
eccentricity
0.52
eq temp k
53.77
insolation
0.0014
mass earth
8581.367
name
PZ Tel b
orbital period days
44000
radius earth
11.9
sys num planets
1

About PZ Tel b

PZ Tel b is an anomaly exoplanet. It lies about 153.5 light-years from Earth, has an equilibrium temperature near 54 K, spans roughly 11.9 Earth radii and weighs about 8,581.37 Earth masses.

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

How to see it

Like any astronomical target, PZ Tel 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 PZ Tel b is an anomaly exoplanet

PZ Tel b scores 70 points on Spacedle's rarity scale, which places it in the anomaly tier. Another 25 points would lift it into a rarer tier.

That score comes from 7 science badges — Confirmed exoplanet, Gas giant, Frozen world, Long-period world, Eccentric orbit, Denser than iron 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.

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Sky imagery and survey data courtesy of Aladin Lite & CDS, Strasbourg. Object data from the NASA Exoplanet Archive, JPL Small-Body Database, and the ATNF Pulsar Catalogue.