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Epic exoplanet 65 EP

HIP 65426 b

RA 201.1502° · Dec -51.5045° · exoplanet

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Score breakdown

· 6 badges
65 pts · Epic
Epic 78 pts → Anomaly
  • Directly imaged +16
  • Lava world +14
  • Orbits a hot blue-white star +14
  • Orbits beyond Neptune's distance +12
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 65

13 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Lava world · +14
  • Directly imaged · +16
  • Orbits a hot blue-white star · +14
  • Orbits beyond Neptune's distance · +12

Trivia

What makes it special

  • Lava world. Its surface is almost certainly an ocean of molten rock, kept liquid by the star it hugs.

What it actually is

  • What it is made of. Its density says rock, though lighter than Earth's mix: probably less iron, or a thick shell of water and ice over the top.

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 7 it is just past naked-eye reach — ordinary binoculars will pull it in.
  • 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 April — that's when to go looking.

Could we get there?

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

Getting there

  • Aboard Voyager 1. ≈ 6.2 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
3.31
diameter km
214476.3687
discovery facility
Paranal Observatory
discovery method
Imaging
discovery year
2017
dist ly
355.1023
eq temp k
1500
host star teff
8840
insolation
0.0022
mag
7.01
mass earth
2860.47
name
HIP 65426 b
radius earth
16.8135
semi major au
92
spect
A2 V
sys num planets
1
sys num stars
1

About HIP 65426 b

HIP 65426 b is an epic exoplanet. It lies about 355.1 light-years from Earth, shines at apparent magnitude 7.01, has spectral type A2 V and has an equilibrium temperature near 1,500 K.

Its surface is almost certainly an ocean of molten rock, kept liquid by the star it hugs.

How to see it

At apparent magnitude 7.01, it is an easy target for binoculars.

Like any astronomical target, HIP 65426 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 65426 b is an epic exoplanet

HIP 65426 b scores 65 points on Spacedle's rarity scale, which places it in the epic tier. Another 13 points would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, Gas giant, Lava world, Directly imaged, 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.