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Trash star 12 EP

HD 168802

RA 275.9785° · Dec -44.9694° · star

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Score breakdown

· 3 badges
12 pts · Trash
Trash 15 pts → Common
  • Giant star +6
  • Star +3
  • Yellow-white F-type star +3
Total score 12

3 more points to reach Common.

Badges

  • Star · +3
  • Yellow-white F-type star · +3
  • Giant star · +6

Trivia

What it actually is

  • Spectral class. Its spectrum reads F2/F3III/IV — 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 8.7 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Corona Australis.
  • 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 June — 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. ≈ 15.4 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 1.4 million years even at the Parker Solar Probe's 192 km/s.

Properties

absmag
1.583
bv
0.387
constellation
CrA
dist ly
876.7634
luminosity
20.2675
mag
8.73
name
HD 168802
spect
F2/F3III/IV

About HD 168802

HD 168802 is a trash star. It lies about 876.8 light-years from Earth, sits in the constellation CrA, shines at apparent magnitude 8.73 and has spectral type F2/F3III/IV.

Its spectrum reads F2/F3III/IV — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HD 168802 in the constellation CrA. At apparent magnitude 8.73, it is an easy target for binoculars.

Like any astronomical target, HD 168802 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 168802 is a trash star

HD 168802 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 3 science badges — Star, Yellow-white F-type star and Giant 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.