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Rare exoplanet 49 EP

HATS-59 b

RA 170.3243° · Dec -22.3882° · exoplanet

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Score breakdown

· 7 badges
49 pts · Rare
Rare 50 pts → Epic
  • Hot Jupiter +10
  • Tidally locked +10
  • Orbits a Sun-like star +8
  • Distant (over 1,000 light-years) +6
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 49

1 more point to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • Gas giant · +4
  • Hot Jupiter · +10
  • Tidally locked · +10
  • Multi-planet system · +6
  • Orbits a Sun-like star · +8

Trivia

Hard to believe

  • It would float. It is less dense than water. Drop it in a big enough ocean and the whole world would bob on the surface.

What it actually is

  • Hugging its star. It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.
  • 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.
  • Crowded system. One of at least 2 planets orbiting its star.

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 14 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • 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 March — that's when to go looking.

Properties

density gcc
0.7
diameter km
161000.2608
discovery facility
HATSouth
discovery method
Transit
discovery year
2018
dist ly
2096.8047
eccentricity
0.129
eq temp k
1128
host star teff
5670
inclination
88.1
insolation
269
mag
14.033
mass earth
256.171
name
HATS-59 b
orbital period days
5.4161
radius earth
12.6213
semi major au
0.0611
sys num planets
2
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About HATS-59 b

HATS-59 b is a rare exoplanet. It lies about 2,096.8 light-years from Earth, shines at apparent magnitude 14.03, has an equilibrium temperature near 1,128 K and spans roughly 12.62 Earth radii.

It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.

How to see it

At apparent magnitude 14.03, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, HATS-59 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 HATS-59 b is a rare exoplanet

HATS-59 b scores 49 points on Spacedle's rarity scale, which places it in the rare tier. Another 1 point would lift it into a rarer tier.

That score comes from 7 science badges — Confirmed exoplanet, Distant (over 1,000 light-years), Gas giant, Hot Jupiter, Tidally locked, Multi-planet system and Orbits a Sun-like star — 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.