Rare exoplanet 40 EP

OGLE-2005-BLG-390L b

RA 268.5800° · Dec -30.3773° · exoplanet

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Score breakdown

· 5 badges

40 pts · Rare

Rare 46 pts → Epic

Found by microlensing +12
Distant (>1000 ly) +10
Frozen world +8
Confirmed exoplanet +5
Sub-Neptune +5

Total score 40

6 more points to reach Epic.

Badges

Confirmed exoplanet · +5
Sub-Neptune · +5
Frozen world · +8
Found by microlensing · +12
Distant (>1000 ly) · +10

Trivia

What makes it special

Frozen world. A deep-frozen world far from its star's warmth.

Could we get there?

Verdict. Impossible with our current technology — and the next millennium of it.

Getting there

Aboard Voyager 1. ≈ 378.3 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 33.6 million years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 215.3 thousand years in a starship at a tenth of light speed.
Distance. 21.5 thousand light-years from Earth.

Look-back time

Look-back time. This light set out before Homo sapiens existed.

Saying hello

Say hello. A radio message and its reply would take 43.1 thousand years round-trip.

Standing on it

A year here. A full year lasts about 9 Earth years.

By the numbers

Size. About 2.2× the width of Earth.
Volume. About 10.8 Earths could fit inside it.
Mass. About 5.5× the mass of Earth.
Your weight. You'd weigh about 1.1× your Earth weight standing here.
Temperature. A frigid -223°C — colder than dry ice.

How we found it

Discovery. Found by OGLE using the microlensing method.

Properties

density gcc: 2.8
discovery facility: OGLE
discovery method: Microlensing
dist ly: 21526.296
eq temp k: 50
mass earth: 5.5
name: OGLE-2005-BLG-390L b
orbital period days: 3285
radius earth: 2.21
sys num planets: 1

About OGLE-2005-BLG-390L b

OGLE-2005-BLG-390L b is a rare exoplanet. It lies about 21,526.3 light-years from Earth, has an equilibrium temperature near 50 K, spans roughly 2.21 Earth radii and weighs about 5.5 Earth masses.

A deep-frozen world far from its star's warmth.

How to see it

Like any astronomical target, OGLE-2005-BLG-390L 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 OGLE-2005-BLG-390L b is a rare exoplanet

OGLE-2005-BLG-390L b scores 40 points on Spacedle's rarity scale, which places it in the rare tier. Another 6 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Sub-Neptune, Frozen world, Found by microlensing and Distant (>1000 ly) — 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.