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Uncommon variable star 27 EP

HD 192871

RA 304.1068° · Dec 22.3965° · star

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Score breakdown

· 5 badges
27 pts · Uncommon
Uncommon 34 pts → Rare
  • Bright giant +12
  • Variable star +5
  • Gently variable +4
  • Yellow-white F-type star +3
  • A named variable star +3
Total score 27

7 more points to reach Rare.

Badges

  • Variable star · +5
  • Yellow-white F-type star · +3
  • Bright giant · +12
  • Gently variable · +4
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads F3II — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
  • 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 7.2 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Vulpecula.
  • 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. Hopelessly far for any craft humanity can build today.

Properties

absmag
0.18
bv
0.331
constellation
Vul
dist ly
815.39
luminosity
73.7904
mag
7.17
name
HD 192871
spect
F3II
var amplitude
0.06
var designation
V383
var max
7.143
var min
7.203

About HD 192871

HD 192871 is an uncommon variable star. It lies about 815.4 light-years from Earth, sits in the constellation Vul, shines at apparent magnitude 7.17 and has spectral type F3II.

Its spectrum reads F3II — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HD 192871 in the constellation Vul. At apparent magnitude 7.17, it is an easy target for binoculars.

Like any astronomical target, HD 192871 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 192871 is an uncommon variable star

HD 192871 scores 27 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 7 points would lift it into a rarer tier.

That score comes from 5 science badges — Variable star, Yellow-white F-type star, Bright giant, Gently 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.