← Back to dex
Trash exoplanet 9 EP

HD 190007 b

RA 300.6956° · Dec 3.3267° · exoplanet

Loading sky survey…
🌌 View in 3D star map
Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 2 badges
9 pts · Trash
Trash 15 pts → Common
  • Confirmed exoplanet +5
  • Neptune-like +4
Total score 9

6 more points to reach Common.

Badges

  • Confirmed exoplanet · +5
  • Neptune-like · +4

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. 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 7.5 it is just past naked-eye reach — ordinary binoculars will pull it in.
  • Seen from everywhere. It sits almost on the celestial equator, so it can be seen from essentially anywhere on Earth.
  • Best time of year. It stands highest in the middle of the night around July — 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. ≈ 728.7 thousand years at Voyager 1's speed (17 km/s).

Properties

density gcc
1.27
diameter km
51790.172
discovery facility
Multiple Observatories
discovery method
Radial Velocity
discovery year
2020
dist ly
41.4678
eccentricity
0.136
eq temp k
651.41
host star teff
4610
insolation
24.6845
mag
7.46
mass earth
15.5
name
HD 190007 b
orbital period days
11.7241
radius earth
4.06
semi major au
0.092
spect
K4 V
sys num planets
1
sys num stars
1

About HD 190007 b

HD 190007 b is a trash exoplanet. It lies about 41.5 light-years from Earth, shines at apparent magnitude 7.46, has spectral type K4 V and has an equilibrium temperature near 651 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 7.46, it is an easy target for binoculars.

Like any astronomical target, HD 190007 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 190007 b is a trash exoplanet

HD 190007 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 Neptune-like — 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.