Uncommon exoplanet 32 EP

DMPP-4 b

RA 293.5827° · Dec 51.2358° · exoplanet

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Score breakdown

· 4 badges

32 pts · Uncommon

Uncommon 33 pts → Rare

Lava world +14
Blasted by starlight +8
Confirmed exoplanet +5
Sub-Neptune +5

Total score 32

1 more point to reach Rare.

Badges

Confirmed exoplanet · +5
Sub-Neptune · +5
Lava world · +14
Blasted by starlight · +8

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. ≈ 1.5 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 129 thousand years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 826 years in a starship at a tenth of light speed.
Distance. 82.6 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 1943.

Saying hello

Say hello. A radio message and its reply would take 165 years round-trip.

Standing on it

A year here. A full year lasts just 3.5 Earth days.

By the numbers

Size. About 3.5× the width of Earth.
Volume. About 44 Earths could fit inside it.
Mass. About 12.2× the mass of Earth.
Your weight. You'd weigh about 1.0× your Earth weight standing here.
Temperature. Around 1373°C — hotter than a self-cleaning oven.

How we found it

Discovery. Found by Multiple Observatories using the radial velocity method.

Properties

density gcc: 1.52
discovery facility: Multiple Observatories
discovery method: Radial Velocity
dist ly: 82.6101
eccentricity: 0.063
eq temp k: 1645.69
insolation: 1222.8464
mass earth: 12.2
name: DMPP-4 b
orbital period days: 3.4982
radius earth: 3.53
sys num planets: 1

About DMPP-4 b

DMPP-4 b is an uncommon exoplanet. It lies about 82.6 light-years from Earth, has an equilibrium temperature near 1,646 K, spans roughly 3.53 Earth radii and weighs about 12.2 Earth masses.

Its surface is likely an ocean of molten rock.

How to see it

Like any astronomical target, DMPP-4 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 DMPP-4 b is an uncommon exoplanet

DMPP-4 b scores 32 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 1 point would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Sub-Neptune, Lava world 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.