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Rare exoplanet 41 EP

WASP-45 b

RA 5.2378° · Dec -35.9985° · exoplanet

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Score breakdown

· 5 badges
41 pts · Rare
Rare 50 pts → Epic
  • Two suns in its sky +12
  • Hot Jupiter +10
  • Tidally locked +10
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 41

9 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Hot Jupiter · +10
  • Tidally locked · +10
  • Two suns in its sky · +12

Trivia

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.

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 11.8 you'll want a small backyard telescope.
  • 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 September — 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. ≈ 12.1 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
1.418
diameter km
135263.0965
discovery facility
SuperWASP
discovery method
Transit
discovery year
2011
dist ly
688.8284
eccentricity
0
eq temp k
1153
host star teff
5150
inclination
85.02
insolation
294
mag
11.801
mass earth
306.3881
multi star system
yes
name
WASP-45 b
orbital period days
3.1261
radius earth
10.6037
semi major au
0.0396
spect
K2 V
sys num planets
1
sys num stars
2
tidally locked
yes
tidally locked inferred
yes

About WASP-45 b

WASP-45 b is a rare exoplanet. It lies about 688.8 light-years from Earth, shines at apparent magnitude 11.8, has spectral type K2 V and has an equilibrium temperature near 1,153 K.

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 11.8, a small backyard telescope will bring it into view.

Like any astronomical target, WASP-45 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 WASP-45 b is a rare exoplanet

WASP-45 b scores 41 points on Spacedle's rarity scale, which places it in the rare tier. Another 9 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Gas giant, Hot Jupiter, Tidally locked and Two suns in its sky — 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.