Rare exoplanet 39 EP

MOA-2007-BLG-400L b

RA 272.4249° · Dec -29.2242° · exoplanet

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Score breakdown

· 5 badges

39 pts · Rare

Rare 46 pts → Epic

Found by microlensing +12
Distant (>1000 ly) +10
Frozen world +8
Confirmed exoplanet +5
Gas giant +4

Total score 39

7 more points to reach Epic.

Badges

Confirmed exoplanet · +5
Gas giant · +4
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. ≈ 394.9 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 35.1 million years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 224.7 thousand years in a starship at a tenth of light speed.
Distance. 22.5 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 44.9 thousand years round-trip.

By the numbers

Size. About 13.5× the width of Earth.
Volume. About 2460 Earths could fit inside it.
Mass. Roughly 540× Earth's mass — about 1.7 Jupiters.
Your weight. You'd weigh about 3.0× your Earth weight standing here.
Temperature. A frigid -239°C — colder than dry ice.

How we found it

Discovery. Found by MOA using the microlensing method.

Properties

density gcc: 1.21
discovery facility: MOA
discovery method: Microlensing
dist ly: 22472.1484
eq temp k: 34
mass earth: 540.3083
name: MOA-2007-BLG-400L b
radius earth: 13.5
sys num planets: 1

About MOA-2007-BLG-400L b

MOA-2007-BLG-400L b is a rare exoplanet. It lies about 22,472.1 light-years from Earth, has an equilibrium temperature near 34 K, spans roughly 13.5 Earth radii and weighs about 540.31 Earth masses.

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

How to see it

Like any astronomical target, MOA-2007-BLG-400L 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 MOA-2007-BLG-400L b is a rare exoplanet

MOA-2007-BLG-400L 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, 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.