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Trash star 11 EP

HD 145390

RA 242.8724° · Dec -21.5871° · star

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Score breakdown

· 4 badges
11 pts · Trash
Trash 15 pts → Common
  • Star +3
  • On the zodiac +3
  • Yellow-white F-type star +3
  • Main-sequence star +2
Total score 11

4 more points to reach Common.

Badges

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

Trivia

What it actually is

  • Spectral class. Its spectrum reads F6/F7V — 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 10.1 you'll want a small backyard telescope, over in Scorpius.
  • 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 May — 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. ≈ 13.8 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 1.2 million years even at the Parker Solar Probe's 192 km/s.

Properties

absmag
3.175
bv
0.83
constellation
Sco
dist ly
787.8164
luminosity
4.6774
mag
10.09
name
HD 145390
spect
F6/F7V

About HD 145390

HD 145390 is a trash star. It lies about 787.8 light-years from Earth, sits in the constellation Sco, shines at apparent magnitude 10.09 and has spectral type F6/F7V.

Its spectrum reads F6/F7V — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HD 145390 in the constellation Sco. At apparent magnitude 10.09, a small backyard telescope will bring it into view.

Like any astronomical target, HD 145390 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 145390 is a trash star

HD 145390 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 4 science badges — Star, On the zodiac, 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.