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Uncommon variable star 29 EP

HD 158393

RA 262.6390° · Dec -33.6544° · star

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Score breakdown

· 6 badges
29 pts · Uncommon
Uncommon 34 pts → Rare
  • Sun-like G-type star +8
  • Giant star +6
  • Variable star +5
  • Gently variable +4
  • On the zodiac +3
  • A named variable star +3
Total score 29

5 more points to reach Rare.

Badges

  • Variable star · +5
  • On the zodiac · +3
  • Sun-like G-type star · +8
  • Giant star · +6
  • Gently variable · +4
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads G8/K0III +F: — 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 8.5 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Scorpius.
  • 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 June — that's when to go looking.

Could we get there?

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

Getting there

  • Aboard Voyager 1. ≈ 16.5 million years at Voyager 1's speed (17 km/s).

Properties

absmag
1.198
bv
1.08
constellation
Sco
dist ly
937.2298
luminosity
28.8935
mag
8.49
name
HD 158393
spect
G8/K0III +F:
var amplitude
0.07
var designation
V965
var max
8.459
var min
8.529

About HD 158393

HD 158393 is an uncommon variable star. It lies about 937.2 light-years from Earth, sits in the constellation Sco, shines at apparent magnitude 8.49 and has spectral type G8/K0III +F:.

Its spectrum reads G8/K0III +F: — a G-type star: the very same spectral class as our own Sun.

How to see it

Look for HD 158393 in the constellation Sco. At apparent magnitude 8.49, it is an easy target for binoculars.

Like any astronomical target, HD 158393 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 158393 is an uncommon variable star

HD 158393 scores 29 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 5 points would lift it into a rarer tier.

That score comes from 6 science badges — Variable star, On the zodiac, Sun-like G-type star, Giant star, 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.