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Rare exoplanet 35 EP

TCP J05074264+2447555 b

RA 76.9280° · Dec 24.7990° · exoplanet

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Score breakdown

· 5 badges
35 pts · Rare
Rare 50 pts → Epic
  • Found by microlensing +12
  • Orbits a Sun-like star +8
  • Distant (over 1,000 light-years) +6
  • Confirmed exoplanet +5
  • Neptune-like +4
Total score 35

15 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • Neptune-like · +4
  • Found by microlensing · +12
  • Orbits a Sun-like star · +8

Trivia

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

  • How to spot it. At magnitude 14.2 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • Northern sky. It rides the northern half of the sky — an easier target the further north you are.
  • Best time of year. It stands highest in the middle of the night around December — 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. ≈ 28.9 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 2.6 million years even at the Parker Solar Probe's 192 km/s.

Properties

density gcc
1.05
diameter km
60209.264
discovery facility
Multiple Observatories
discovery method
Microlensing
discovery year
2018
dist ly
1647.0878
eq temp k
344.63
host star teff
5805
insolation
2.3507
mag
14.243
mass earth
20
name
TCP J05074264+2447555 b
radius earth
4.72
semi major au
0.94
sys num planets
1
sys num stars
1

About TCP J05074264+2447555 b

TCP J05074264+2447555 b is a rare exoplanet. It lies about 1,647.1 light-years from Earth, shines at apparent magnitude 14.24, has an equilibrium temperature near 345 K and spans roughly 4.72 Earth radii.

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

How to see it

At apparent magnitude 14.24, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, TCP J05074264+2447555 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 TCP J05074264+2447555 b is a rare exoplanet

TCP J05074264+2447555 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), Neptune-like, Found by microlensing and Orbits a Sun-like star — 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.