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Uncommon star 24 EP

HD 128418

RA 219.9112° · Dec -64.7137° · star

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Score breakdown

· 3 badges
24 pts · Uncommon
Uncommon 34 pts → Rare
  • Supergiant +18
  • Star +3
  • Yellow-white F-type star +3
Total score 24

10 more points to reach Rare.

Badges

  • Star · +3
  • Yellow-white F-type star · +3
  • Supergiant · +18

Trivia

What it actually is

  • Spectral class. Its spectrum reads F3Ib — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
  • Where it is in life. It is a supergiant, hundreds of times wider 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 7.3 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Circinus.
  • 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 April — 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. ≈ 10 million years at Voyager 1's speed (17 km/s).

Properties

absmag
1.077
bv
0.529
constellation
Cir
dist ly
570.2029
luminosity
32.2998
mag
7.29
name
HD 128418
spect
F3Ib

About HD 128418

HD 128418 is an uncommon star. It lies about 570.2 light-years from Earth, sits in the constellation Cir, shines at apparent magnitude 7.29 and has spectral type F3Ib.

Its spectrum reads F3Ib — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HD 128418 in the constellation Cir. At apparent magnitude 7.29, it is an easy target for binoculars.

Like any astronomical target, HD 128418 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 128418 is an uncommon star

HD 128418 scores 24 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 10 points would lift it into a rarer tier.

That score comes from 3 science badges — Star, Yellow-white F-type star and Supergiant — 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.