Epic exoplanet 53 EP

WASP-33 b

RA 36.7127° · Dec 37.5504° · exoplanet

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Score breakdown

· 5 badges

53 pts · Epic

Epic 68 pts → Anomaly

Ultra-hot Jupiter +26
Hot Jupiter +10
Blasted by starlight +8
Confirmed exoplanet +5
Gas giant +4

Total score 53

15 more points to reach Anomaly.

Badges

Confirmed exoplanet · +5
Gas giant · +4
Hot Jupiter · +10
Ultra-hot Jupiter · +26
Blasted by starlight · +8

Trivia

What makes it special

Ultra-hot Jupiter. So hot that iron vaporises and rains back down as molten metal.

Could we get there?

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

Getting there

Aboard Voyager 1. ≈ 7 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 621 thousand years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 3977 years in a starship at a tenth of light speed.
Distance. 398 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 1628.

Saying hello

Say hello. A radio message and its reply would take 795 years round-trip.

Standing on it

A year here. A full year lasts just 1.2 Earth days.

By the numbers

Size. About 17.9× the width of Earth.
Volume. About 5693 Earths could fit inside it.
Mass. Roughly 665× Earth's mass — about 2.1 Jupiters.
Your weight. You'd weigh about 2.1× your Earth weight standing here.
Density. Less dense than water — drop it in a big enough ocean and it would float.
Temperature. Around 2782 K — hot enough to vaporise iron.

How we found it

Discovery. Found by SuperWASP using the transit method.

Properties

density gcc: 0.689
discovery facility: SuperWASP
discovery method: Transit
dist ly: 397.7277
eccentricity: 0
eq temp k: 2781.7
insolation: 9392.0471
mass earth: 665.2182
name: WASP-33 b
orbital period days: 1.2199
radius earth: 17.8559
sys num planets: 1

About WASP-33 b

WASP-33 b is an epic exoplanet. It lies about 397.7 light-years from Earth, has an equilibrium temperature near 2,782 K, spans roughly 17.86 Earth radii and weighs about 665.22 Earth masses.

So hot that iron vaporises and rains back down as molten metal.

How to see it

Like any astronomical target, WASP-33 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 WASP-33 b is an epic exoplanet

WASP-33 b scores 53 points on Spacedle's rarity scale, which places it in the epic tier. Another 15 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Gas giant, Hot Jupiter, Ultra-hot Jupiter and Blasted by starlight — 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.