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Rare variable star 45 EP

Schedar

RA 10.1267° · Dec 56.5373° · star

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Score breakdown

· 8 badges
45 pts · Rare
Rare 50 pts → Epic
  • Bright giant +12
  • Naked-eye visible +8
  • Has a proper name +8
  • Variable star +5
  • Never sets (northern circumpolar) +4
  • Orange K-type star +3
  • A named variable star +3
  • Barely variable (under 0.05 mag) +2
Total score 45

5 more points to reach Epic.

Badges

  • Variable star · +5
  • Naked-eye visible · +8
  • Has a proper name · +8
  • Never sets (northern circumpolar) · +4
  • Orange K-type star · +3
  • Bright giant · +12
  • Barely variable (under 0.05 mag) · +2
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads K0II-IIIvar — a K-type star. Orange K dwarfs are the marathon runners of the galaxy, burning steadily for tens of billions of years.
  • Where it is in life. It is a bright giant, well on its way to the largest stars there are.
  • It changes. This star does not hold still: its brightness rises and falls on a rhythm of hours, days or years, either pulsing in size or being eclipsed by a companion.

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 2.2 you can see it with your own eyes from a dark site, over in Cassiopeia.
  • 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 September — that's when to go looking.

Could we get there?

  • Verdict. Hopelessly far for any craft humanity can build today.

Properties

absmag
-1.985
bv
1.17
constellation
Cas
dist ly
228.2407
luminosity
542.0009
mag
2.24
name
Schedar
named
yes
spect
K0II-IIIvar
var amplitude
0.02
var designation
Alp
var max
2.23
var min
2.25

About Schedar

Schedar is a rare variable star. It lies about 228.2 light-years from Earth, sits in the constellation Cas, shines at apparent magnitude 2.24 and has spectral type K0II-IIIvar.

Its spectrum reads K0II-IIIvar — a K-type star. Orange K dwarfs are the marathon runners of the galaxy, burning steadily for tens of billions of years.

How to see it

Look for Schedar in the constellation Cas. At apparent magnitude 2.24, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, Schedar 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 Schedar is a rare variable star

Schedar scores 45 points on Spacedle's rarity scale, which places it in the rare tier. Another 5 points would lift it into a rarer tier.

That score comes from 8 science badges — Variable star, Naked-eye visible, Has a proper name, Never sets (northern circumpolar), Orange K-type star, Bright giant, Barely variable (under 0.05 mag) and A named variable 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.