← Back to dex
Trash star 8 EP

HD 175556

RA 286.4518° · Dec -77.8539° · star

Loading sky survey…
🌌 View in 3D star map
Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 3 badges
8 pts · Trash
Trash 15 pts → Common
  • Star +3
  • Yellow-white F-type star +3
  • Main-sequence star +2
Total score 8

7 more points to reach Common.

Badges

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

Trivia

What it actually is

  • Spectral class. Its spectrum reads F7/F8V — 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 9.2 you'll want a small backyard telescope, over in Octans.
  • Southern sky only. So far south it never rises for most of the northern hemisphere. To see it you'd have to travel to Chile, South Africa or Australia.
  • Best time of year. It stands highest in the middle of the night around July — 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. ≈ 6.6 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 587.4 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

absmag
3.91
bv
0.583
constellation
Oct
dist ly
376.1893
luminosity
2.3768
mag
9.22
name
HD 175556
spect
F7/F8V

About HD 175556

HD 175556 is a trash star. It lies about 376.2 light-years from Earth, sits in the constellation Oct, shines at apparent magnitude 9.22 and has spectral type F7/F8V.

Its spectrum reads F7/F8V — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HD 175556 in the constellation Oct. At apparent magnitude 9.22, a small backyard telescope will bring it into view.

Like any astronomical target, HD 175556 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 175556 is a trash star

HD 175556 scores 8 points on Spacedle's rarity scale, which places it in the trash tier. Another 7 points would lift it into a rarer tier.

That score comes from 3 science badges — Star, 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.