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Uncommon exoplanet 26 EP

HD 50554 b

RA 103.6783° · Dec 24.2451° · exoplanet

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Score breakdown

· 4 badges
26 pts · Uncommon
Uncommon 34 pts → Rare
  • Eccentric orbit +9
  • Orbits a Sun-like star +8
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 26

8 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Eccentric orbit · +9
  • Orbits a Sun-like star · +8

Trivia

What it actually is

  • What it is made of. Its density says rock, though lighter than Earth's mix: probably less iron, or a thick shell of water and ice over the top.

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 6.9 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 January — 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. ≈ 1.8 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 158.7 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

density gcc
4.87
diameter km
163279.36
discovery facility
Lick Observatory
discovery method
Radial Velocity
discovery year
2002
dist ly
101.6511
eccentricity
0.501
eq temp k
190.08
host star teff
5987
inclination
61
insolation
0.251
mag
6.8561
mass earth
1859.2962
name
HD 50554 b
orbital period days
1293
radius earth
12.8
semi major au
2.353
spect
F8 V
sys num planets
1
sys num stars
1

About HD 50554 b

HD 50554 b is an uncommon exoplanet. It lies about 101.7 light-years from Earth, shines at apparent magnitude 6.86, has spectral type F8 V and has an equilibrium temperature near 190 K.

Its density says rock, though lighter than Earth's mix: probably less iron, or a thick shell of water and ice over the top.

How to see it

At apparent magnitude 6.86, it is an easy target for binoculars.

Like any astronomical target, HD 50554 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 50554 b is an uncommon exoplanet

HD 50554 b scores 26 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 8 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Gas giant, Eccentric orbit 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.