Rare exoplanet 45 EP

WASP-49 b

RA 91.0897° · Dec -16.9654° · exoplanet

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Score breakdown

· 5 badges

45 pts · Rare

Rare 46 pts → Epic

Lava world +14
Puffy low-density world +12
Hot Jupiter +10
Confirmed exoplanet +5
Gas giant +4

Total score 45

1 more point to reach Epic.

Badges

Confirmed exoplanet · +5
Gas giant · +4
Hot Jupiter · +10
Lava world · +14
Puffy low-density world · +12

Trivia

What makes it special

Lava world. Its surface is likely an ocean of molten rock.
Cotton-candy planet. So low-density it would float on water.

Could we get there?

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

Getting there

Aboard Voyager 1. ≈ 11.2 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 990.8 thousand years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 6345 years in a starship at a tenth of light speed.
Distance. 635 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 1391.

Saying hello

Say hello. A radio message and its reply would take 1269 years round-trip.

Standing on it

A year here. A full year lasts just 2.8 Earth days.

By the numbers

Size. About 12.4× the width of Earth.
Volume. About 1926 Earths could fit inside it.
Mass. Roughly 118× Earth's mass — about 0.4 Jupiters.
Your weight. You'd weigh about 0.8× your Earth weight standing here.
Density. Less dense than water — drop it in a big enough ocean and it would float.
Temperature. Around 1127°C — hotter than a self-cleaning oven.

How we found it

Discovery. Found by SuperWASP using the transit method.

Properties

density gcc: 0.288
discovery facility: SuperWASP
discovery method: Transit
dist ly: 634.5463
eccentricity: 0
eq temp k: 1400
insolation: 615.4709
mass earth: 117.5971
name: WASP-49 b
orbital period days: 2.7817
radius earth: 12.442
sys num planets: 1

About WASP-49 b

WASP-49 b is a rare exoplanet. It lies about 634.5 light-years from Earth, has an equilibrium temperature near 1,400 K, spans roughly 12.44 Earth radii and weighs about 117.6 Earth masses.

Its surface is likely an ocean of molten rock.

How to see it

Like any astronomical target, WASP-49 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-49 b is a rare exoplanet

WASP-49 b scores 45 points on Spacedle's rarity scale, which places it in the rare tier. Another 1 point would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Gas giant, Hot Jupiter, Lava world and Puffy low-density world — 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.