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Trash star 11 EP

HD 224173

RA 358.9534° · Dec -13.9666° · star

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Score breakdown

· 4 badges
11 pts · Trash
Trash 15 pts → Common
  • Star +3
  • On the zodiac +3
  • Yellow-white F-type star +3
  • Main-sequence star +2
Total score 11

4 more points to reach Common.

Badges

  • Star · +3
  • On the zodiac · +3
  • Yellow-white F-type star · +3
  • Main-sequence star · +2

Trivia

What it actually is

  • Spectral class. Its spectrum reads F5/F6V — 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 7.3 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Aquarius.
  • Southern sky. It rides the southern half of the sky — an easier target the further south 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. ≈ 3.1 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 276.9 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

absmag
3.623
bv
0.498
constellation
Aqr
dist ly
177.3552
luminosity
3.096
mag
7.3
name
HD 224173
spect
F5/F6V

About HD 224173

HD 224173 is a trash star. It lies about 177.4 light-years from Earth, sits in the constellation Aqr, shines at apparent magnitude 7.3 and has spectral type F5/F6V.

Its spectrum reads F5/F6V — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HD 224173 in the constellation Aqr. At apparent magnitude 7.3, it is an easy target for binoculars.

Like any astronomical target, HD 224173 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 224173 is a trash star

HD 224173 scores 11 points on Spacedle's rarity scale, which places it in the trash tier. Another 4 points would lift it into a rarer tier.

That score comes from 4 science badges — Star, On the zodiac, 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.