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Rare star 43 EP

HD 182040

RA 290.7920° · Dec -10.7032° · star

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Score breakdown

· 4 badges
43 pts · Rare
Rare 50 pts → Epic
  • Carbon star (sooty red) +24
  • Intrinsically luminous (Mv < −2) +10
  • Distant (over 1,000 light-years) +6
  • Star +3
Total score 43

7 more points to reach Epic.

Badges

  • Star · +3
  • Distant (over 1,000 light-years) · +6
  • Carbon star (sooty red) · +24
  • Intrinsically luminous (Mv < −2) · +10

Trivia

What it actually is

  • Spectral class. Its spectrum reads C0 — a carbon star, wrapped in so much soot that its light is filtered to a deep ruby red.

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 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Aquila.
  • 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. Impossible with our current technology — and the next millennium of it.

Getting there

  • Aboard Voyager 1. ≈ 46.2 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 4.1 million years even at the Parker Solar Probe's 192 km/s.

Properties

absmag
-2.543
bv
1.022
constellation
Aql
dist ly
2630.2903
luminosity
906.1498
mag
6.99
name
HD 182040
spect
C0

About HD 182040

HD 182040 is a rare star. It lies about 2,630.3 light-years from Earth, sits in the constellation Aql, shines at apparent magnitude 6.99 and has spectral type C0.

Its spectrum reads C0 — a carbon star, wrapped in so much soot that its light is filtered to a deep ruby red.

How to see it

Look for HD 182040 in the constellation Aql. At apparent magnitude 6.99, it is an easy target for binoculars.

Like any astronomical target, HD 182040 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 182040 is a rare star

HD 182040 scores 43 points on Spacedle's rarity scale, which places it in the rare tier. Another 7 points would lift it into a rarer tier.

That score comes from 4 science badges — Star, Distant (over 1,000 light-years), Carbon star (sooty red) and Intrinsically luminous (Mv < −2) — 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.