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Common variable star 15 EP

HD 139194

RA 233.8756° · Dec 36.2096° · star

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Score breakdown

· 4 badges
15 pts · Common
Common 22 pts → Uncommon
  • Variable star +5
  • Gently variable +4
  • Orange K-type star +3
  • A named variable star +3
Total score 15

7 more points to reach Uncommon.

Badges

  • Variable star · +5
  • Orange K-type star · +3
  • Gently variable · +4
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads K0 — a K-type star. Orange K dwarfs are the marathon runners of the galaxy, burning steadily for tens of billions of years.
  • 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. Inside our stellar backyard: every radio broadcast humanity has ever made has already swept past it.

Find it in the sky

  • How to spot it. At magnitude 8.6 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Corona Borealis.
  • 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 May — 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. ≈ 1.7 million years at Voyager 1's speed (17 km/s).

Properties

absmag
6.235
bv
0.866
constellation
CrB
dist ly
97.3892
luminosity
0.2793
mag
8.61
name
HD 139194
spect
K0
var amplitude
0.07
var designation
AN
var max
8.575
var min
8.645

About HD 139194

HD 139194 is a common variable star. It lies about 97.4 light-years from Earth, sits in the constellation CrB, shines at apparent magnitude 8.61 and has spectral type K0.

Its spectrum reads K0 — a K-type star. Orange K dwarfs are the marathon runners of the galaxy, burning steadily for tens of billions of years.

How to see it

Look for HD 139194 in the constellation CrB. At apparent magnitude 8.61, it is an easy target for binoculars.

Like any astronomical target, HD 139194 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 139194 is a common variable star

HD 139194 scores 15 points on Spacedle's rarity scale, which places it in the common tier. Another 7 points would lift it into a rarer tier.

That score comes from 4 science badges — Variable star, Orange K-type 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.