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Trash star 8 EP

HD 155685

RA 258.5594° · Dec -26.9844° · star

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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 F2/F3V — 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 6.6 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Ophiuchus.
  • 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. ≈ 5.3 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 475.1 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

absmag
1.791
bv
0.427
constellation
Oph
dist ly
304.2501
luminosity
16.734
mag
6.64
name
HD 155685
spect
F2/F3V

About HD 155685

HD 155685 is a trash star. It lies about 304.3 light-years from Earth, sits in the constellation Oph, shines at apparent magnitude 6.64 and has spectral type F2/F3V.

Its spectrum reads F2/F3V — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HD 155685 in the constellation Oph. At apparent magnitude 6.64, it is an easy target for binoculars.

Like any astronomical target, HD 155685 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 155685 is a trash star

HD 155685 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.