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Uncommon variable star 30 EP

HD 125081

RA 214.4241° · Dec -21.8288° · star

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Score breakdown

· 6 badges
30 pts · Uncommon
Uncommon 34 pts → Rare
  • Bright giant +12
  • Variable star +5
  • Gently variable +4
  • On the zodiac +3
  • Yellow-white F-type star +3
  • A named variable star +3
Total score 30

4 more points to reach Rare.

Badges

  • Variable star · +5
  • On the zodiac · +3
  • 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 F2II — 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 7.3 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Virgo.
  • Southern sky. It rides the southern half of the sky — an easier target the further south you are.
  • Best time of year. It stands highest in the middle of the night around April — that's when to go looking.

Could we get there?

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

Properties

absmag
1.26
bv
0.445
constellation
Vir
dist ly
536.4408
luminosity
27.2898
mag
7.34
name
HD 125081
spect
F2II
var amplitude
0.06
var designation
MX
var max
7.308
var min
7.368

About HD 125081

HD 125081 is an uncommon variable star. It lies about 536.4 light-years from Earth, sits in the constellation Vir, shines at apparent magnitude 7.34 and has spectral type F2II.

Its spectrum reads F2II — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HD 125081 in the constellation Vir. At apparent magnitude 7.34, it is an easy target for binoculars.

Like any astronomical target, HD 125081 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 125081 is an uncommon variable star

HD 125081 scores 30 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 4 points would lift it into a rarer tier.

That score comes from 6 science badges — Variable star, On the zodiac, 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.