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Trash exoplanet 9 EP

HD 3765 b

RA 10.2073° · Dec 40.1843° · exoplanet

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Score breakdown

· 2 badges
9 pts · Trash
Trash 15 pts → Common
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 9

6 more points to reach Common.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4

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

  • 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. Inside our stellar backyard: every radio broadcast humanity has ever made has already swept past it.

Find it in the sky

  • How to spot it. At magnitude 7.4 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 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. ≈ 1 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
0.482
diameter km
109193.072
discovery facility
Multiple Observatories
discovery method
Radial Velocity
discovery year
2021
dist ly
58.4667
eccentricity
0.298
eq temp k
152.85
host star teff
5049.8
insolation
0.0863
mag
7.36
mass earth
54.9843
name
HD 3765 b
orbital period days
1211
radius earth
8.56
semi major au
2.108
spect
K2V
sys num planets
1
sys num stars
1

Nearby objects

About HD 3765 b

HD 3765 b is a trash exoplanet. It lies about 58.5 light-years from Earth, shines at apparent magnitude 7.36, has spectral type K2V and has an equilibrium temperature near 153 K.

Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.

How to see it

At apparent magnitude 7.36, it is an easy target for binoculars.

Like any astronomical target, HD 3765 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 3765 b is a trash exoplanet

HD 3765 b scores 9 points on Spacedle's rarity scale, which places it in the trash tier. Another 6 points would lift it into a rarer tier.

That score comes from 2 science badges — Confirmed exoplanet 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.