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Epic exoplanet 71 EP

USco1556 b

RA 239.1037° · Dec -25.6890° · exoplanet

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Score breakdown

· 6 badges
71 pts · Epic
Epic 78 pts → Anomaly
  • Ultra-hot Jupiter +26
  • Directly imaged +16
  • Orbits beyond Neptune's distance +12
  • Orbits a red dwarf +8
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 71

7 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Ultra-hot Jupiter · +26
  • Directly imaged · +16
  • Orbits a red dwarf · +8
  • Orbits beyond Neptune's distance · +12

Trivia

What makes it special

  • Ultra-hot Jupiter. So hot that iron vaporises on the dayside, blows around to the night side and rains back down as molten metal.

Hard to believe

  • Denser than iron. It is packed tighter than solid iron — whatever it is made of, it is not ordinary rock.

What it actually is

  • What it is made of. Denser than Earth — a solid world of rock and iron, with no meaningful atmosphere to speak of by mass.

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 15.4 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • 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 May — that's when to go looking.

Could we get there?

  • Verdict. Hopelessly far for any craft humanity can build today.

Properties

density gcc
14.1
diameter km
156901.26
discovery facility
Multiple Observatories
discovery method
Imaging
discovery year
2019
dist ly
458.6895
eq temp k
2240
host star teff
3410
insolation
0
mag
15.36
mass earth
4767.45
name
USco1556 b
radius earth
12.3
semi major au
3500
spect
M3.0 V
sys num planets
1
sys num stars
1

About USco1556 b

USco1556 b is an epic exoplanet. It lies about 458.7 light-years from Earth, shines at apparent magnitude 15.36, has spectral type M3.0 V and has an equilibrium temperature near 2,240 K.

So hot that iron vaporises on the dayside, blows around to the night side and rains back down as molten metal.

How to see it

At apparent magnitude 15.36, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, USco1556 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 USco1556 b is an epic exoplanet

USco1556 b scores 71 points on Spacedle's rarity scale, which places it in the epic tier. Another 7 points would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, Gas giant, Ultra-hot Jupiter, Directly imaged, Orbits a red dwarf and Orbits beyond Neptune's distance — 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.