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Uncommon star 33 EP

HD 211822

RA 334.6569° · Dec 52.6560° · star

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Score breakdown

· 5 badges
33 pts · Uncommon
Uncommon 34 pts → Rare
  • Intrinsically luminous (Mv < −2) +10
  • Sun-like G-type star +8
  • Distant (over 1,000 light-years) +6
  • Giant star +6
  • Star +3
Total score 33

1 more point to reach Rare.

Badges

  • Star · +3
  • Distant (over 1,000 light-years) · +6
  • Sun-like G-type star · +8
  • Giant star · +6
  • Intrinsically luminous (Mv < −2) · +10

Trivia

What it actually is

  • Spectral class. Its spectrum reads G2III — 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 7.3 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Lacerta.
  • 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 August — 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. ≈ 56.7 million years at Voyager 1's speed (17 km/s).

Properties

absmag
-2.688
bv
1.136
constellation
Lac
dist ly
3229.2673
luminosity
1035.619
mag
7.29
name
HD 211822
spect
G2III

About HD 211822

HD 211822 is an uncommon star. It lies about 3,229.3 light-years from Earth, sits in the constellation Lac, shines at apparent magnitude 7.29 and has spectral type G2III.

Its spectrum reads G2III — a G-type star: the very same spectral class as our own Sun.

How to see it

Look for HD 211822 in the constellation Lac. At apparent magnitude 7.29, it is an easy target for binoculars.

Like any astronomical target, HD 211822 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 211822 is an uncommon star

HD 211822 scores 33 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 1 point would lift it into a rarer tier.

That score comes from 5 science badges — Star, Distant (over 1,000 light-years), Sun-like G-type star, Giant 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.