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Epic variable star 50 EP

HIP 99527

RA 302.9836° · Dec 20.3345° · star

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Score breakdown

· 6 badges
50 pts · Epic
Epic 78 pts → Anomaly
  • Supergiant +18
  • Strongly variable +10
  • Deep red star +8
  • Hot blue B-type star +6
  • Variable star +5
  • A named variable star +3
Total score 50

28 more points to reach Anomaly.

Badges

  • Variable star · +5
  • Hot blue B-type star · +6
  • Supergiant · +18
  • Deep red star · +8
  • Strongly variable · +10
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads B4Ieq-K2Ib — a blue-white B-type star, with a surface tens of thousands of degrees hot and a life measured in tens of millions of years.
  • Where it is in life. It is a supergiant. Drop it where the Sun is and its surface would engulf the inner planets.
  • 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 9.2 you'll want a small backyard telescope, over in Sagitta.
  • 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
2.894
bv
1.91
constellation
Sge
dist ly
606.2379
luminosity
6.059
mag
9.24
name
HIP 99527
spect
B4Ieq-K2Ib
var amplitude
0.57
var designation
FG
var max
9.062
var min
9.632

About HIP 99527

HIP 99527 is an epic variable star. It lies about 606.2 light-years from Earth, sits in the constellation Sge, shines at apparent magnitude 9.24 and has spectral type B4Ieq-K2Ib.

Its spectrum reads B4Ieq-K2Ib — a blue-white B-type star, with a surface tens of thousands of degrees hot and a life measured in tens of millions of years.

How to see it

Look for HIP 99527 in the constellation Sge. At apparent magnitude 9.24, a small backyard telescope will bring it into view.

Like any astronomical target, HIP 99527 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 HIP 99527 is an epic variable star

HIP 99527 scores 50 points on Spacedle's rarity scale, which places it in the epic tier. Another 28 points would lift it into a rarer tier.

That score comes from 6 science badges — Variable star, Hot blue B-type star, Supergiant, Deep red star, 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.