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Epic exoplanet 51 EP

HIP 65 A b

RA 0.1856° · Dec -54.8308° · exoplanet

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Score breakdown

· 6 badges
51 pts · Epic
Epic 68 pts → Anomaly
  • Lava world +14
  • Ultra-short period +14
  • Hot Jupiter +10
  • Confirmed exoplanet +5
  • Gas giant +4
  • Found by TESS +4
Total score 51

17 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Hot Jupiter · +10
  • Lava world · +14
  • Ultra-short period · +14
  • Found by TESS · +4

Trivia

What makes it special

  • Lava world. Its surface is likely an ocean of molten rock.

Could we get there?

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

Getting there

  • Aboard Voyager 1. ≈ 3.5 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 314.7 thousand years even at the Parker Solar Probe's 192 km/s.
  • At 10% light speed. ≈ 2015 years in a starship at a tenth of light speed.
  • Distance. 202 light-years from Earth.

Look-back time

  • Look-back time. The light you'd see left around the year 1824.

Saying hello

  • Say hello. A radio message and its reply would take 403 years round-trip.

Standing on it

  • A year here. A full year lasts just 1 Earth days.

By the numbers

  • Size. About 22.8× the width of Earth.
  • Volume. About 11.8 thousand Earths could fit inside it.
  • Mass. Roughly 1021× Earth's mass — about 3.2 Jupiters.
  • Your weight. You'd weigh about 2.0× your Earth weight standing here.
  • Density. Less dense than water — drop it in a big enough ocean and it would float.
  • Temperature. Around 1138°C — hotter than a self-cleaning oven.

How we found it

  • Discovery. Found by Transiting Exoplanet Survey Satellite (TESS) using the transit method.

Properties

density gcc
0.48
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
dist ly
201.5174
eccentricity
0
eq temp k
1411
insolation
661
mass earth
1021.1878
name
HIP 65 A b
orbital period days
0.981
radius earth
22.7543
sys num planets
1

About HIP 65 A b

HIP 65 A b is an epic exoplanet. It lies about 201.5 light-years from Earth, has an equilibrium temperature near 1,411 K, spans roughly 22.75 Earth radii and weighs about 1,021.19 Earth masses.

Its surface is likely an ocean of molten rock.

How to see it

Like any astronomical target, HIP 65 A 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 65 A b is an epic exoplanet

HIP 65 A b scores 51 points on Spacedle's rarity scale, which places it in the epic tier. Another 17 points would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, Gas giant, Hot Jupiter, Lava world, Ultra-short period and Found by TESS — 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.

spacedle A daily roll through the real universe. © 2026 spacedle. Buy me a coffee

Sky imagery and survey data courtesy of Aladin Lite & CDS, Strasbourg. Object data from the NASA Exoplanet Archive, JPL Small-Body Database, and the ATNF Pulsar Catalogue.