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Trash star 6 EP

HD 8931

RA 21.9807° · Dec -3.5734° · star

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Score breakdown

· 2 badges
6 pts · Trash
Trash 15 pts → Common
  • Star +3
  • Yellow-white F-type star +3
Total score 6

9 more points to reach Common.

Badges

  • Star · +3
  • Yellow-white F-type star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads F5 — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

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 7.8 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Cetus.
  • 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 October — 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. ≈ 7.4 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 656.3 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

absmag
2.279
bv
0.502
constellation
Cet
dist ly
420.3042
luminosity
10.6758
mag
7.83
name
HD 8931
spect
F5

About HD 8931

HD 8931 is a trash star. It lies about 420.3 light-years from Earth, sits in the constellation Cet, shines at apparent magnitude 7.83 and has spectral type F5.

Its spectrum reads F5 — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HD 8931 in the constellation Cet. At apparent magnitude 7.83, it is an easy target for binoculars.

Like any astronomical target, HD 8931 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 8931 is a trash star

HD 8931 scores 6 points on Spacedle's rarity scale, which places it in the trash tier. Another 9 points would lift it into a rarer tier.

That score comes from 2 science badges — Star and Yellow-white F-type 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.