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Epic exoplanet 69 EP

CFHTWIR-Oph 98 b

RA 246.9343° · Dec -23.9811° · exoplanet

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Score breakdown

· 7 badges
69 pts · Epic
Epic 78 pts → Anomaly
  • Directly imaged +16
  • Lava world +14
  • Orbits beyond Neptune's distance +12
  • Long-period world +10
  • Orbits a red dwarf +8
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 69

9 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Lava world · +14
  • Long-period world · +10
  • Directly imaged · +16
  • Orbits a red dwarf · +8
  • 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. Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.

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 May — that's when to go looking.

Standing on it

  • A year here. A full year lasts about 22 thousand Earth years.

By the numbers

  • Size. About 20.8× the width of Earth.
  • Temperature. Around 1527°C — hotter than a self-cleaning oven.
  • Your weight. You'd weigh about 5.7× your Earth weight standing here.

Properties

density gcc
1.5
diameter km
265950.2392
discovery facility
Hubble Space Telescope
discovery method
Imaging
discovery year
2020
eq temp k
1800
host star teff
2320
insolation
0
mass earth
2479.0616
name
CFHTWIR-Oph 98 b
orbital period days
8040000
radius earth
20.8487
semi major au
200
spect
M9-L1
sys num planets
1
sys num stars
1

About CFHTWIR-Oph 98 b

CFHTWIR-Oph 98 b is an epic exoplanet. It has spectral type M9-L1, has an equilibrium temperature near 1,800 K, spans roughly 20.85 Earth radii and weighs about 2,479.06 Earth masses.

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

How to see it

Like any astronomical target, CFHTWIR-Oph 98 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 CFHTWIR-Oph 98 b is an epic exoplanet

CFHTWIR-Oph 98 b scores 69 points on Spacedle's rarity scale, which places it in the epic tier. Another 9 points would lift it into a rarer tier.

That score comes from 7 science badges — Confirmed exoplanet, Gas giant, Lava world, Long-period world, 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.