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Epic exoplanet 63 EP

WASP-84 c

RA 131.1070° · Dec 1.8599° · exoplanet

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Score breakdown

· 7 badges
63 pts · Epic
Epic 68 pts → Anomaly
  • Denser than iron +18
  • Lava world +14
  • Super-Earth +8
  • Blasted by starlight +8
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Found by TESS +4
Total score 63

5 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Super-Earth · +8
  • Lava world · +14
  • Denser than iron · +18
  • Multi-planet system · +6
  • Blasted by starlight · +8
  • Found by TESS · +4

Trivia

What makes it special

  • Lava world. Its surface is likely an ocean of molten rock.
  • 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. ≈ 5.8 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 512.3 thousand years even at the Parker Solar Probe's 192 km/s.
  • At 10% light speed. ≈ 3281 years in a starship at a tenth of light speed.
  • Distance. 328 light-years from Earth.

Look-back time

  • Look-back time. The light you'd see left around the year 1698.

Saying hello

  • Say hello. A radio message and its reply would take 656 years round-trip.

Standing on it

  • A year here. A full year lasts just 1.4 Earth days.

By the numbers

  • Size. About 1.9× the width of Earth.
  • Volume. About 7.4 Earths could fit inside it.
  • Mass. About 15.2× the mass of Earth.
  • Your weight. You'd weigh about 4.0× your Earth weight standing here.
  • Density. Denser than solid iron.
  • Temperature. Around 1056°C — hotter than a self-cleaning oven.

How we found it

  • Discovery. Found by Transiting Exoplanet Survey Satellite (TESS) using the transit method.

Cosmic context

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

Properties

density gcc
11.2
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
dist ly
328.0738
eq temp k
1329
insolation
1452.18
mass earth
15.2
name
WASP-84 c
orbital period days
1.4469
radius earth
1.95
sys num planets
2

About WASP-84 c

WASP-84 c is an epic exoplanet. It lies about 328.1 light-years from Earth, has an equilibrium temperature near 1,329 K, spans roughly 1.95 Earth radii and weighs about 15.2 Earth masses.

Its surface is likely an ocean of molten rock.

How to see it

Like any astronomical target, WASP-84 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 WASP-84 c is an epic exoplanet

WASP-84 c scores 63 points on Spacedle's rarity scale, which places it in the epic tier. Another 5 points would lift it into a rarer tier.

That score comes from 7 science badges — Confirmed exoplanet, Super-Earth, Lava world, Denser than iron, Multi-planet system, Blasted by starlight and Found by TESS — 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.