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Rare variable star 40 EP

HIP 91613

RA 280.2528° · Dec -6.0972° · star

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Score breakdown

· 6 badges
40 pts · Rare
Rare 50 pts → Epic
  • Strongly variable +10
  • Sun-like G-type star +8
  • Deep red star +8
  • Distant (over 1,000 light-years) +6
  • Variable star +5
  • A named variable star +3
Total score 40

10 more points to reach Epic.

Badges

  • Variable star · +5
  • Distant (over 1,000 light-years) · +6
  • Sun-like G-type star · +8
  • Deep red star · +8
  • Strongly variable · +10
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads G — a G-type star: the very same spectral class as our own Sun.
  • 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 10.6 you'll want a small backyard telescope, over in Scutum.
  • Seen from everywhere. It sits almost on the celestial equator, so it can be seen from essentially anywhere on Earth.
  • 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. Impossible with our current technology — and the next millennium of it.

Getting there

  • Aboard Voyager 1. ≈ 30.2 million years at Voyager 1's speed (17 km/s).

Properties

absmag
1.974
bv
1.65
constellation
Sct
dist ly
1716.6106
luminosity
14.1384
mag
10.58
name
HIP 91613
spect
G
var amplitude
0.51
var designation
CK
var max
10.338
var min
10.848

About HIP 91613

HIP 91613 is a rare variable star. It lies about 1,716.6 light-years from Earth, sits in the constellation Sct, shines at apparent magnitude 10.58 and has spectral type G.

Its spectrum reads G — a G-type star: the very same spectral class as our own Sun.

How to see it

Look for HIP 91613 in the constellation Sct. At apparent magnitude 10.58, a small backyard telescope will bring it into view.

Like any astronomical target, HIP 91613 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 91613 is a rare variable star

HIP 91613 scores 40 points on Spacedle's rarity scale, which places it in the rare tier. Another 10 points would lift it into a rarer tier.

That score comes from 6 science badges — Variable star, Distant (over 1,000 light-years), Sun-like G-type star, 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.