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Uncommon star 30 EP

HD 168311

RA 275.1139° · Dec -32.8017° · star

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Score breakdown

· 6 badges
30 pts · Uncommon
Uncommon 34 pts → Rare
  • Toward the galactic centre +8
  • Sun-like G-type star +8
  • Distant (over 1,000 light-years) +6
  • Star +3
  • On the zodiac +3
  • Main-sequence star +2
Total score 30

4 more points to reach Rare.

Badges

  • Star · +3
  • Distant (over 1,000 light-years) · +6
  • Toward the galactic centre · +8
  • On the zodiac · +3
  • Sun-like G-type star · +8
  • Main-sequence star · +2

Trivia

What it actually is

  • Spectral class. Its spectrum reads G2/G3V — a G-type star: the very same spectral class as our own Sun.

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 9.3 you'll want a small backyard telescope, 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. Impossible with our current technology — and the next millennium of it.

Getting there

  • Aboard Voyager 1. ≈ 29.9 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 2.7 million years even at the Parker Solar Probe's 192 km/s.

Properties

absmag
0.757
bv
0.569
constellation
Sgr
dist ly
1698.7291
luminosity
43.3711
mag
9.34
name
HD 168311
spect
G2/G3V

About HD 168311

HD 168311 is an uncommon star. It lies about 1,698.7 light-years from Earth, sits in the constellation Sgr, shines at apparent magnitude 9.34 and has spectral type G2/G3V.

Its spectrum reads G2/G3V — a G-type star: the very same spectral class as our own Sun.

How to see it

Look for HD 168311 in the constellation Sgr. At apparent magnitude 9.34, a small backyard telescope will bring it into view.

Like any astronomical target, HD 168311 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 168311 is an uncommon star

HD 168311 scores 30 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 4 points would lift it into a rarer tier.

That score comes from 6 science badges — Star, Distant (over 1,000 light-years), Toward the galactic centre, On the zodiac, Sun-like G-type star and Main-sequence 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.