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Rare star 36 EP

HR 6691

RA 269.7320° · Dec -36.8584° · star

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Score breakdown

· 6 badges
36 pts · Rare
Rare 50 pts → Epic
  • Naked-eye visible +8
  • Toward the galactic centre +8
  • Sun-like G-type star +8
  • Giant star +6
  • Star +3
  • On the zodiac +3
Total score 36

14 more points to reach Epic.

Badges

  • Star · +3
  • Naked-eye visible · +8
  • Toward the galactic centre · +8
  • On the zodiac · +3
  • Sun-like G-type star · +8
  • Giant star · +6

Trivia

What it actually is

  • Spectral class. Its spectrum reads G8III — a G-type star: the very same spectral class as our own Sun.
  • Where it is in life. It is a giant. It has already exhausted its core hydrogen and swollen up enormously in response.

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 5.7 you can see it with your own eyes from a dark site, 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 June — 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. ≈ 7 million years at Voyager 1's speed (17 km/s).

Properties

absmag
0.312
bv
0.915
constellation
Sgr
dist ly
397.2668
luminosity
65.3431
mag
5.74
name
HR 6691
spect
G8III

About HR 6691

HR 6691 is a rare star. It lies about 397.3 light-years from Earth, sits in the constellation Sgr, shines at apparent magnitude 5.74 and has spectral type G8III.

Its spectrum reads G8III — a G-type star: the very same spectral class as our own Sun.

How to see it

Look for HR 6691 in the constellation Sgr. At apparent magnitude 5.74, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, HR 6691 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 6691 is a rare star

HR 6691 scores 36 points on Spacedle's rarity scale, which places it in the rare tier. Another 14 points would lift it into a rarer tier.

That score comes from 6 science badges — Star, Naked-eye visible, Toward the galactic centre, On the zodiac, Sun-like G-type star and Giant 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.