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Common variable star 19 EP

HD 87700

RA 151.2577° · Dec -56.8979° · 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 6.9 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Vela.
  • 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 February — that's when to go looking.

Could we get there?

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

Properties

absmag
1.147
bv
0.37
constellation
Vel
dist ly
452.9945
luminosity
30.2831
mag
6.86
name
HD 87700
spect
F2III/IV
var amplitude
0.05
var designation
V336
var max
6.836
var min
6.886

About HD 87700

HD 87700 is a common variable star. It lies about 453 light-years from Earth, sits in the constellation Vel, shines at apparent magnitude 6.86 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 HD 87700 in the constellation Vel. At apparent magnitude 6.86, it is an easy target for binoculars.

Like any astronomical target, HD 87700 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 87700 is a common variable star

HD 87700 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.