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Trash star 11 EP

HD 159753

RA 265.2717° · Dec -65.0785° · star

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Score breakdown

· 3 badges
11 pts · Trash
Trash 15 pts → Common
  • Subgiant (leaving the main sequence) +5
  • Star +3
  • Yellow-white F-type star +3
Total score 11

4 more points to reach Common.

Badges

  • Star · +3
  • Yellow-white F-type star · +3
  • Subgiant (leaving the main sequence) · +5

Trivia

What it actually is

  • Spectral class. Its spectrum reads F3/F5IV — 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 Ara.
  • 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 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. ≈ 5.8 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 515.5 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

absmag
4.124
bv
0.404
constellation
Ara
dist ly
330.1175
luminosity
1.9516
mag
9.15
name
HD 159753
spect
F3/F5IV

About HD 159753

HD 159753 is a trash star. It lies about 330.1 light-years from Earth, sits in the constellation Ara, shines at apparent magnitude 9.15 and has spectral type F3/F5IV.

Its spectrum reads F3/F5IV — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HD 159753 in the constellation Ara. At apparent magnitude 9.15, a small backyard telescope will bring it into view.

Like any astronomical target, HD 159753 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 159753 is a trash star

HD 159753 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 3 science badges — Star, Yellow-white F-type star and Subgiant (leaving the main sequence) — 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.