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Common variable star 19 EP

HR 7524

RA 297.7548° · Dec -65.6051° · star

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Score breakdown

· 5 badges
19 pts · Common
Common 22 pts → Uncommon
  • Giant star +6
  • Variable star +5
  • Yellow-white F-type star +3
  • A named variable star +3
  • Barely variable (under 0.05 mag) +2
Total score 19

3 more points to reach Uncommon.

Badges

  • Variable star · +5
  • Yellow-white F-type star · +3
  • Giant star · +6
  • Barely variable (under 0.05 mag) · +2
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads F2III-IV — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
  • Where it is in life. It is a giant. It has already exhausted its core hydrogen and swollen up enormously in response.
  • 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 6 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Pavo.
  • Southern sky only. So far south it never rises for most of the northern hemisphere. To see it you'd have to travel to Chile, South Africa or Australia.
  • 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
2.226
bv
0.317
constellation
Pav
dist ly
188.857
luminosity
11.2099
mag
6.04
name
HR 7524
spect
F2III-IV
var amplitude
0.03
var designation
NZ
var max
6.025
var min
6.055

About HR 7524

HR 7524 is a common variable star. It lies about 188.9 light-years from Earth, sits in the constellation Pav, shines at apparent magnitude 6.04 and has spectral type F2III-IV.

Its spectrum reads F2III-IV — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HR 7524 in the constellation Pav. At apparent magnitude 6.04, it is an easy target for binoculars.

Like any astronomical target, HR 7524 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 HR 7524 is a common variable star

HR 7524 scores 19 points on Spacedle's rarity scale, which places it in the common tier. Another 3 points would lift it into a rarer tier.

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