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Epic variable star 52 EP

HD 190629

RA 301.1150° · Dec 36.8168° · star

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Score breakdown

· 6 badges
52 pts · Epic
Epic 78 pts → Anomaly
  • S-type star (zirconium giant) +20
  • Strongly variable +10
  • Deep red star +8
  • Distant (over 1,000 light-years) +6
  • Variable star +5
  • A named variable star +3
Total score 52

26 more points to reach Anomaly.

Badges

  • Variable star · +5
  • Distant (over 1,000 light-years) · +6
  • S-type star (zirconium giant) · +20
  • Deep red star · +8
  • Strongly variable · +10
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads S75v — an S-type giant, its atmosphere laced with zirconium dredged up from the fusion going on below.
  • Where it is in life. It is on the main sequence, quietly fusing hydrogen in its core exactly as the Sun does.
  • 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 8.2 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Cygnus.
  • 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 July — that's when to go looking.

Could we get there?

  • Verdict. Impossible with our current technology — and the next millennium of it.

Properties

absmag
0.061
bv
2.165
constellation
Cyg
dist ly
1358.9834
luminosity
82.3379
mag
8.16
name
HD 190629
spect
S75v
var amplitude
1.01
var designation
AA
var max
7.821
var min
8.831

About HD 190629

HD 190629 is an epic variable star. It lies about 1,359 light-years from Earth, sits in the constellation Cyg, shines at apparent magnitude 8.16 and has spectral type S75v.

Its spectrum reads S75v — an S-type giant, its atmosphere laced with zirconium dredged up from the fusion going on below.

How to see it

Look for HD 190629 in the constellation Cyg. At apparent magnitude 8.16, it is an easy target for binoculars.

Like any astronomical target, HD 190629 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 190629 is an epic variable star

HD 190629 scores 52 points on Spacedle's rarity scale, which places it in the epic tier. Another 26 points would lift it into a rarer tier.

That score comes from 6 science badges — Variable star, Distant (over 1,000 light-years), S-type star (zirconium giant), Deep red star, Strongly variable 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.