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Epic star 55 EP

HR 7767

RA 304.5291° · Dec 40.7321° · star

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Score breakdown

· 6 badges
55 pts · Epic
Epic 78 pts → Anomaly
  • Blazing O-type star +26
  • Intrinsically luminous (Mv < −2) +10
  • Naked-eye visible +8
  • Distant (over 1,000 light-years) +6
  • Star +3
  • Main-sequence star +2
Total score 55

23 more points to reach Anomaly.

Badges

  • Star · +3
  • Distant (over 1,000 light-years) · +6
  • Naked-eye visible · +8
  • Blazing O-type star · +26
  • Main-sequence star · +2
  • Intrinsically luminous (Mv < −2) · +10

Trivia

What it actually is

  • Spectral class. Its spectrum reads O9V — an O-type star — the hottest, rarest main class there is. Fewer than one star in a million is an O, and none of them lasts long.
  • Where it is in life. It is on the main sequence, quietly fusing hydrogen in its core exactly as the Sun does.

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 5.8 you can see it with your own eyes from a dark site, over in Cygnus.
  • Northern sky. It rides the northern half of the sky — an easier target the further north 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. ≈ 34.1 million years at Voyager 1's speed (17 km/s).

Properties

absmag
-3.043
bv
0.073
constellation
Cyg
dist ly
1941.4048
luminosity
1436.1507
mag
5.83
name
HR 7767
spect
O9V

About HR 7767

HR 7767 is an epic star. It lies about 1,941.4 light-years from Earth, sits in the constellation Cyg, shines at apparent magnitude 5.83 and has spectral type O9V.

Its spectrum reads O9V — an O-type star — the hottest, rarest main class there is. Fewer than one star in a million is an O, and none of them lasts long.

How to see it

Look for HR 7767 in the constellation Cyg. At apparent magnitude 5.83, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, HR 7767 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 HR 7767 is an epic star

HR 7767 scores 55 points on Spacedle's rarity scale, which places it in the epic tier. Another 23 points would lift it into a rarer tier.

That score comes from 6 science badges — Star, Distant (over 1,000 light-years), Naked-eye visible, Blazing O-type star, Main-sequence star 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.