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Epic exoplanet 51 EP

HAT-P-69 b

RA 130.5056° · Dec 3.7106° · exoplanet

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Score breakdown

· 6 badges
51 pts · Epic
Epic 68 pts → Anomaly
  • Lava world +14
  • Hot Jupiter +10
  • Distant (>1000 ly) +10
  • Blasted by starlight +8
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 51

17 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Hot Jupiter · +10
  • Lava world · +14
  • Blasted by starlight · +8
  • Distant (>1000 ly) · +10

Trivia

What makes it special

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

Could we get there?

  • Verdict. Impossible with our current technology — and the next millennium of it.

Getting there

  • Aboard Voyager 1. ≈ 19.6 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 1.7 million years even at the Parker Solar Probe's 192 km/s.
  • At 10% light speed. ≈ 11.1 thousand years in a starship at a tenth of light speed.
  • Distance. 1113 light-years from Earth.

Look-back time

  • Look-back time. The light you'd see left around the year 913.

Saying hello

  • Say hello. A radio message and its reply would take 2226 years round-trip.

Standing on it

  • A year here. A full year lasts just 4.8 Earth days.

By the numbers

  • Size. About 18.8× the width of Earth.
  • Volume. About 6630 Earths could fit inside it.
  • Mass. Roughly 1138× Earth's mass — about 3.6 Jupiters.
  • Your weight. You'd weigh about 3.2× your Earth weight standing here.
  • Temperature. Around 1657°C — hotter than a self-cleaning oven.

How we found it

  • Discovery. Found by HATNet using the transit method.

Properties

density gcc
1.02
discovery facility
HATNet
discovery method
Transit
dist ly
1113.0498
eccentricity
0
eq temp k
1930
insolation
2320.18
mass earth
1137.8314
name
HAT-P-69 b
orbital period days
4.7869
radius earth
18.7863
sys num planets
1

About HAT-P-69 b

HAT-P-69 b is an epic exoplanet. It lies about 1,113 light-years from Earth, has an equilibrium temperature near 1,930 K, spans roughly 18.79 Earth radii and weighs about 1,137.83 Earth masses.

Its surface is likely an ocean of molten rock.

How to see it

Like any astronomical target, HAT-P-69 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 HAT-P-69 b is an epic exoplanet

HAT-P-69 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, Blasted by starlight and Distant (>1000 ly) — 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.

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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.