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Trash star 9 EP

HD 217147

RA 344.6572° · Dec -8.4563° · star

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Score breakdown

· 3 badges
9 pts · Trash
Trash 15 pts → Common
  • Star +3
  • On the zodiac +3
  • Yellow-white F-type star +3
Total score 9

6 more points to reach Common.

Badges

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

Trivia

What it actually is

  • Spectral class. Its spectrum reads F8 — 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 9.1 you'll want a small backyard telescope, over in Aquarius.
  • Seen from everywhere. It sits almost on the celestial equator, so it can be seen from essentially anywhere on Earth.
  • 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. ≈ 4 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 356.9 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

absmag
4.842
bv
0.566
constellation
Aqr
dist ly
228.5607
luminosity
1.0074
mag
9.07
name
HD 217147
spect
F8

About HD 217147

HD 217147 is a trash star. It lies about 228.6 light-years from Earth, sits in the constellation Aqr, shines at apparent magnitude 9.07 and has spectral type F8.

Its spectrum reads F8 — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HD 217147 in the constellation Aqr. At apparent magnitude 9.07, a small backyard telescope will bring it into view.

Like any astronomical target, HD 217147 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 217147 is a trash star

HD 217147 scores 9 points on Spacedle's rarity scale, which places it in the trash tier. Another 6 points would lift it into a rarer tier.

That score comes from 3 science badges — Star, On the zodiac and Yellow-white F-type 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.