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Uncommon star 25 EP

HD 11821

RA 29.4867° · Dec 61.1926° · star

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Score breakdown

· 5 badges
25 pts · Uncommon
Uncommon 34 pts → Rare
  • Sun-like G-type star +8
  • Deep red star +8
  • Never sets (northern circumpolar) +4
  • Star +3
  • Main-sequence star +2
Total score 25

9 more points to reach Rare.

Badges

  • Star · +3
  • Never sets (northern circumpolar) · +4
  • Sun-like G-type star · +8
  • Main-sequence star · +2
  • Deep red star · +8

Trivia

What it actually is

  • Spectral class. Its spectrum reads G8V — a G-type star: the very same spectral class as our own Sun.
  • 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 8 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Cassiopeia.
  • Never sets. So far north that from Britain, Canada or northern Europe it never dips below the horizon — it is up every clear night of the year.
  • Best time of year. It stands highest in the middle of the night around October — 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. ≈ 11.8 million years at Voyager 1's speed (17 km/s).

Properties

absmag
1.469
bv
1.44
constellation
Cas
dist ly
672.4867
luminosity
22.5113
mag
8.04
name
HD 11821
spect
G8V

About HD 11821

HD 11821 is an uncommon star. It lies about 672.5 light-years from Earth, sits in the constellation Cas, shines at apparent magnitude 8.04 and has spectral type G8V.

Its spectrum reads G8V — a G-type star: the very same spectral class as our own Sun.

How to see it

Look for HD 11821 in the constellation Cas. At apparent magnitude 8.04, it is an easy target for binoculars.

Like any astronomical target, HD 11821 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 11821 is an uncommon star

HD 11821 scores 25 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 9 points would lift it into a rarer tier.

That score comes from 5 science badges — Star, Never sets (northern circumpolar), Sun-like G-type star, Main-sequence star and Deep red 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.