← Back to dex
Rare variable star 39 EP

HD 347827

RA 270.2884° · Dec 19.2491° · star

Loading sky survey…
🌌 View in 3D star map
Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 6 badges
39 pts · Rare
Rare 50 pts → Epic
  • Bright giant +12
  • Strongly variable +10
  • Distant (over 1,000 light-years) +6
  • Variable star +5
  • Yellow-white F-type star +3
  • A named variable star +3
Total score 39

11 more points to reach Epic.

Badges

  • Variable star · +5
  • Distant (over 1,000 light-years) · +6
  • Yellow-white F-type star · +3
  • Bright giant · +12
  • Strongly variable · +10
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads F3II-III — 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 10.3 you'll want a small backyard telescope, over in Hercules.
  • 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 June — that's when to go looking.

Could we get there?

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

Properties

absmag
0.799
bv
0.451
constellation
Her
dist ly
2568.1576
luminosity
41.7254
mag
10.28
name
HD 347827
spect
F3II-III
var amplitude
0.87
var designation
BL
var max
9.754
var min
10.624

About HD 347827

HD 347827 is a rare variable star. It lies about 2,568.2 light-years from Earth, sits in the constellation Her, shines at apparent magnitude 10.28 and has spectral type F3II-III.

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

How to see it

Look for HD 347827 in the constellation Her. At apparent magnitude 10.28, a small backyard telescope will bring it into view.

Like any astronomical target, HD 347827 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 347827 is a rare variable star

HD 347827 scores 39 points on Spacedle's rarity scale, which places it in the rare tier. Another 11 points would lift it into a rarer tier.

That score comes from 6 science badges — Variable star, Distant (over 1,000 light-years), Yellow-white F-type star, Bright giant, 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.