Rare exoplanet 39 EP

XO-2 N b

RA 117.0268° · Dec 50.2251° · exoplanet

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Score breakdown

· 5 badges

39 pts · Rare

Rare 46 pts → Epic

Lava world +14
Hot Jupiter +10
Multi-planet system +6
Confirmed exoplanet +5
Gas giant +4

Total score 39

7 more points to reach Epic.

Badges

Confirmed exoplanet · +5
Gas giant · +4
Hot Jupiter · +10
Lava world · +14
Multi-planet system · +6

Trivia

What makes it special

Lava world. Its surface is likely an ocean of molten rock.

Could we get there?

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

Getting there

Aboard Voyager 1. ≈ 8.8 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 785.7 thousand years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 5032 years in a starship at a tenth of light speed.
Distance. 503 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 1523.

Saying hello

Say hello. A radio message and its reply would take 1006 years round-trip.

Standing on it

A year here. A full year lasts just 2.6 Earth days.

By the numbers

Size. About 11.1× the width of Earth.
Volume. About 1379 Earths could fit inside it.
Mass. Roughly 200× Earth's mass — about 0.6 Jupiters.
Your weight. You'd weigh about 1.6× your Earth weight standing here.
Density. Less dense than water — drop it in a big enough ocean and it would float.
Temperature. Around 1055°C — hotter than a self-cleaning oven.

How we found it

Discovery. Found by XO using the transit method.

Cosmic context

Crowded system. One of at least 4 planets orbiting its star.

Properties

density gcc: 0.715
discovery facility: XO
discovery method: Transit
dist ly: 503.1706
eccentricity: 0
eq temp k: 1328
insolation: 428.036
mass earth: 199.9151
name: XO-2 N b
orbital period days: 2.6159
radius earth: 11.1305
sys num planets: 4

About XO-2 N b

XO-2 N b is a rare exoplanet. It lies about 503.2 light-years from Earth, has an equilibrium temperature near 1,328 K, spans roughly 11.13 Earth radii and weighs about 199.92 Earth masses.

Its surface is likely an ocean of molten rock.

How to see it

Like any astronomical target, XO-2 N 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 XO-2 N b is a rare exoplanet

XO-2 N b scores 39 points on Spacedle's rarity scale, which places it in the rare tier. Another 7 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Gas giant, Hot Jupiter, Lava world and Multi-planet system — 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.