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Rare exoplanet 39 EP

HD 145934 b

RA 243.2912° · Dec 13.2395° · exoplanet

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Score breakdown

· 3 badges
39 pts · Rare
Rare 50 pts → Epic
  • In the habitable zone +30
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 39

11 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • In the habitable zone · +30
  • Gas giant · +4

Trivia

What makes it special

  • Goldilocks zone. Sits where it's neither too hot nor too cold — liquid water could exist on a surface here.

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.
  • What the zone means. The habitable zone is only about temperature: it is the band where liquid water could survive on a surface. It is a promising address, not evidence of anything living.

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 8.5 it is just past naked-eye reach — ordinary binoculars will pull it in.
  • Northern sky. It rides the northern half of the sky — an easier target the further north you are.
  • Best time of year. It stands highest in the middle of the night around May — that's when to go looking.

Could we get there?

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

Properties

density gcc
1.5
diameter km
170933.08
discovery facility
W. M. Keck Observatory
discovery method
Radial Velocity
discovery year
2015
dist ly
743.2476
eccentricity
0.078
eq temp k
276.92
habitable zone
yes
host star teff
4823.75
inclination
81.958
insolation
0.9461
mag
8.495
mass earth
658.5405
name
HD 145934 b
orbital period days
2751.5343
radius earth
13.4
semi major au
4.89
spect
K0
sys num planets
1
sys num stars
1

About HD 145934 b

HD 145934 b is a rare exoplanet. It lies about 743.2 light-years from Earth, shines at apparent magnitude 8.49, has spectral type K0 and has an equilibrium temperature near 277 K.

Sits where it's neither too hot nor too cold — liquid water could exist on a surface here.

How to see it

At apparent magnitude 8.49, it is an easy target for binoculars.

Like any astronomical target, HD 145934 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 HD 145934 b is a rare exoplanet

HD 145934 b scores 39 points on Spacedle's rarity scale, which places it in the rare tier. Another 11 points would lift it into a rarer tier.

That score comes from 3 science badges — Confirmed exoplanet, In the habitable zone and Gas giant — 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.