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Common star 18 EP

HD 195459

RA 309.1498° · Dec -71.0714° · star

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Score breakdown

· 4 badges
18 pts · Common
Common 22 pts → Uncommon
  • White A-type star +5
  • Subgiant (leaving the main sequence) +5
  • Blue-white star +5
  • Star +3
Total score 18

4 more points to reach Uncommon.

Badges

  • Star · +3
  • White A-type star · +5
  • Subgiant (leaving the main sequence) · +5
  • Blue-white star · +5

Trivia

What it actually is

  • Spectral class. Its spectrum reads A0IV — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.
  • Where it is in life. It is a subgiant, caught in the act of leaving the main sequence as the hydrogen in its core runs out.

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 6.8 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Pavo.
  • 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 July — 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. ≈ 10.7 million years at Voyager 1's speed (17 km/s).

Properties

absmag
0.49
bv
-0.008
constellation
Pav
dist ly
607.3667
luminosity
55.4626
mag
6.84
name
HD 195459
spect
A0IV

About HD 195459

HD 195459 is a common star. It lies about 607.4 light-years from Earth, sits in the constellation Pav, shines at apparent magnitude 6.84 and has spectral type A0IV.

Its spectrum reads A0IV — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.

How to see it

Look for HD 195459 in the constellation Pav. At apparent magnitude 6.84, it is an easy target for binoculars.

Like any astronomical target, HD 195459 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 195459 is a common star

HD 195459 scores 18 points on Spacedle's rarity scale, which places it in the common tier. Another 4 points would lift it into a rarer tier.

That score comes from 4 science badges — Star, White A-type star, Subgiant (leaving the main sequence) and Blue-white 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.