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Common star 16 EP

HD 13504

RA 33.5267° · Dec 61.6844° · star

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Score breakdown

· 4 badges
16 pts · Common
Common 22 pts → Uncommon
  • Giant star +6
  • Never sets (northern circumpolar) +4
  • Star +3
  • Yellow-white F-type star +3
Total score 16

6 more points to reach Uncommon.

Badges

  • Star · +3
  • Never sets (northern circumpolar) · +4
  • Yellow-white F-type star · +3
  • Giant star · +6

Trivia

What it actually is

  • Spectral class. Its spectrum reads F6III — an F-type star — a little hotter, whiter and shorter-lived than the 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 8.2 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. ≈ 6 million years at Voyager 1's speed (17 km/s).

Properties

absmag
3.101
bv
0.461
constellation
Cas
dist ly
342.9612
luminosity
5.0073
mag
8.21
name
HD 13504
spect
F6III

About HD 13504

HD 13504 is a common star. It lies about 343 light-years from Earth, sits in the constellation Cas, shines at apparent magnitude 8.21 and has spectral type F6III.

Its spectrum reads F6III — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HD 13504 in the constellation Cas. At apparent magnitude 8.21, it is an easy target for binoculars.

Like any astronomical target, HD 13504 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 13504 is a common star

HD 13504 scores 16 points on Spacedle's rarity scale, which places it in the common tier. Another 6 points would lift it into a rarer tier.

That score comes from 4 science badges — Star, Never sets (northern circumpolar), Yellow-white F-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.