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Trash star 12 EP

HD 204129

RA 319.6283° · Dec 80.3535° · star

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Score breakdown

· 4 badges
12 pts · Trash
Trash 15 pts → Common
  • Never sets (northern circumpolar) +4
  • Star +3
  • Yellow-white F-type star +3
  • Main-sequence star +2
Total score 12

3 more points to reach Common.

Badges

  • Star · +3
  • Never sets (northern circumpolar) · +4
  • Yellow-white F-type star · +3
  • Main-sequence star · +2

Trivia

What it actually is

  • Spectral class. Its spectrum reads F6V — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
  • Where it is in life. It is on the main sequence, quietly fusing hydrogen in its core exactly as the Sun does.

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 7.3 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Cepheus.
  • Never sets. So far north that from Britain, Canada or northern Europe it never dips below the horizon — it is up every clear night of the year.
  • Best time of year. It stands highest in the middle of the night around August — 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. ≈ 4.7 million years at Voyager 1's speed (17 km/s).

Properties

absmag
2.775
bv
0.509
constellation
Cep
dist ly
268.2203
luminosity
6.7608
mag
7.35
name
HD 204129
spect
F6V

About HD 204129

HD 204129 is a trash star. It lies about 268.2 light-years from Earth, sits in the constellation Cep, shines at apparent magnitude 7.35 and has spectral type F6V.

Its spectrum reads F6V — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HD 204129 in the constellation Cep. At apparent magnitude 7.35, it is an easy target for binoculars.

Like any astronomical target, HD 204129 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 204129 is a trash star

HD 204129 scores 12 points on Spacedle's rarity scale, which places it in the trash tier. Another 3 points would lift it into a rarer tier.

That score comes from 4 science badges — Star, Never sets (northern circumpolar), Yellow-white F-type star and Main-sequence 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.