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Trash star 14 EP

HD 90

RA 1.4294° · Dec -22.5098° · star

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Score breakdown

· 4 badges
14 pts · Trash
Trash 15 pts → Common
  • Distant (over 1,000 light-years) +6
  • Star +3
  • Yellow-white F-type star +3
  • Main-sequence star +2
Total score 14

1 more point to reach Common.

Badges

  • Star · +3
  • Distant (over 1,000 light-years) · +6
  • Yellow-white F-type star · +3
  • Main-sequence star · +2

Trivia

What it actually is

  • Spectral class. Its spectrum reads F3/F5V — 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 9.7 you'll want a small backyard telescope, over in Cetus.
  • 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 September — that's when to go looking.

Could we get there?

  • Verdict. Impossible with our current technology — and the next millennium of it.

Getting there

  • Aboard Voyager 1. ≈ 34.3 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 3 million years even at the Parker Solar Probe's 192 km/s.

Properties

absmag
0.784
bv
0.524
constellation
Cet
dist ly
1953.03
luminosity
42.3058
mag
9.67
name
HD 90
spect
F3/F5V

About HD 90

HD 90 is a trash star. It lies about 1,953 light-years from Earth, sits in the constellation Cet, shines at apparent magnitude 9.67 and has spectral type F3/F5V.

Its spectrum reads F3/F5V — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HD 90 in the constellation Cet. At apparent magnitude 9.67, a small backyard telescope will bring it into view.

Like any astronomical target, HD 90 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 90 is a trash star

HD 90 scores 14 points on Spacedle's rarity scale, which places it in the trash tier. Another 1 point would lift it into a rarer tier.

That score comes from 4 science badges — Star, Distant (over 1,000 light-years), 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.