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Uncommon star 30 EP

HD 215286

RA 340.7294° · Dec 58.4265° · star

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Score breakdown

· 4 badges
30 pts · Uncommon
Uncommon 34 pts → Rare
  • Supergiant +18
  • White A-type star +5
  • Never sets (northern circumpolar) +4
  • Star +3
Total score 30

4 more points to reach Rare.

Badges

  • Star · +3
  • Never sets (northern circumpolar) · +4
  • White A-type star · +5
  • Supergiant · +18

Trivia

What it actually is

  • Spectral class. Its spectrum reads A2Ib — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.
  • Where it is in life. It is a supergiant, hundreds of times wider than the 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 8.1 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Cepheus.
  • 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. Hopelessly far for any craft humanity can build today.

Getting there

  • Aboard Voyager 1. ≈ 16.7 million years at Voyager 1's speed (17 km/s).

Properties

absmag
0.763
bv
0.002
constellation
Cep
dist ly
948.128
luminosity
43.132
mag
8.08
name
HD 215286
spect
A2Ib

About HD 215286

HD 215286 is an uncommon star. It lies about 948.1 light-years from Earth, sits in the constellation Cep, shines at apparent magnitude 8.08 and has spectral type A2Ib.

Its spectrum reads A2Ib — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.

How to see it

Look for HD 215286 in the constellation Cep. At apparent magnitude 8.08, it is an easy target for binoculars.

Like any astronomical target, HD 215286 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 215286 is an uncommon star

HD 215286 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 4 science badges — Star, Never sets (northern circumpolar), White A-type star and Supergiant — 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.