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Anomaly exoplanet 103 EP

HIP 79098 AB b

RA 242.1821° · Dec -23.6855° · exoplanet

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Score breakdown

· 8 badges
103 pts · Anomaly
Anomaly 120 pts → Mythic
  • Ultra-hot Jupiter +26
  • Directly imaged +16
  • Circumbinary (orbits both stars) +14
  • Orbits a hot blue-white star +14
  • Its star is visible to the naked eye +12
  • Orbits beyond Neptune's distance +12
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 103

17 more points to reach Mythic.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Ultra-hot Jupiter · +26
  • Circumbinary (orbits both stars) · +14
  • Directly imaged · +16
  • Its star is visible to the naked eye · +12
  • Orbits a hot blue-white star · +14
  • 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 5.9 you can see it with your own eyes from a dark site.
  • 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

circumbinary
yes
density gcc
20.2
diameter km
154350.02
discovery facility
Paranal Observatory
discovery method
Imaging
discovery year
2019
dist ly
475.5289
eq temp k
2450
host star teff
9193.75
mag
5.86
mass earth
6515.515
name
HIP 79098 AB b
radius earth
12.1
semi major au
345
spect
B9 V
sys num planets
1
sys num stars
2

About HIP 79098 AB b

HIP 79098 AB b is an anomaly exoplanet. It lies about 475.5 light-years from Earth, shines at apparent magnitude 5.86, has spectral type B9 V and has an equilibrium temperature near 2,450 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 5.86, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, HIP 79098 AB 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 HIP 79098 AB b is an anomaly exoplanet

HIP 79098 AB b scores 103 points on Spacedle's rarity scale, which places it in the anomaly tier. Another 17 points would lift it into a rarer tier.

That score comes from 8 science badges — Confirmed exoplanet, Gas giant, Ultra-hot Jupiter, Circumbinary (orbits both stars), Directly imaged, Its star is visible to the naked eye, Orbits a hot blue-white star 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.