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Rare exoplanet 35 EP

MOA-2007-BLG-400L b

RA 272.4249° · Dec -29.2242° · exoplanet

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Score breakdown

· 5 badges
35 pts · Rare
Rare 50 pts → Epic
  • Found by microlensing +12
  • Frozen world +8
  • Distant (over 1,000 light-years) +6
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 35

15 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • Gas giant · +4
  • Frozen world · +8
  • Found by microlensing · +12

Trivia

What makes it special

  • Frozen world. A deep-frozen world, too far from its star's warmth for anything to stay liquid.

What it actually is

  • What it is made of. Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.

Sense of scale

  • In perspective. Far away by human standards, yet still a local address inside the Milky Way's spiral arms.

Find it in the sky

  • Southern sky. It rides the southern half of the sky — an easier target the further south you are.
  • Best time of year. It stands highest in the middle of the night around June — that's when to go looking.

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.

Properties

density gcc
1.21
diameter km
172208.7
discovery facility
MOA
discovery method
Microlensing
discovery year
2008
dist ly
22472.1484
eq temp k
34
mass earth
540.3083
name
MOA-2007-BLG-400L b
radius earth
13.5
semi major au
5.9
sys num planets
1
sys num stars
1

Nearby objects

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, too far from its star's warmth for anything to stay liquid.

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 35 points on Spacedle's rarity scale, which places it in the rare tier. Another 15 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Distant (over 1,000 light-years), Gas giant, Frozen world and Found by microlensing — 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.