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Uncommon star 24 EP

HD 185905

RA 295.5944° · Dec -24.8593° · star

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Score breakdown

· 5 badges
24 pts · Uncommon
Uncommon 34 pts → Rare
  • Toward the galactic centre +8
  • White A-type star +5
  • Subgiant (leaving the main sequence) +5
  • Star +3
  • On the zodiac +3
Total score 24

10 more points to reach Rare.

Badges

  • Star · +3
  • Toward the galactic centre · +8
  • On the zodiac · +3
  • White A-type star · +5
  • Subgiant (leaving the main sequence) · +5

Trivia

What it actually is

  • Spectral class. Its spectrum reads A3/A4IV — 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.

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 6.7 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Sagittarius.
  • 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 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. ≈ 10.2 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 909.4 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

absmag
0.441
bv
0.196
constellation
Sgr
dist ly
582.4213
luminosity
58.023
mag
6.7
name
HD 185905
spect
A3/A4IV

About HD 185905

HD 185905 is an uncommon star. It lies about 582.4 light-years from Earth, sits in the constellation Sgr, shines at apparent magnitude 6.7 and has spectral type A3/A4IV.

Its spectrum reads A3/A4IV — 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 185905 in the constellation Sgr. At apparent magnitude 6.7, it is an easy target for binoculars.

Like any astronomical target, HD 185905 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 185905 is an uncommon star

HD 185905 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 5 science badges — Star, Toward the galactic centre, On the zodiac, White A-type star and Subgiant (leaving the main sequence) — 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.