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Rare variable star 35 EP

HR 152

RA 9.1935° · Dec 44.4886° · star

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Score breakdown

· 7 badges
35 pts · Rare
Rare 50 pts → Epic
  • Naked-eye visible +8
  • Deep red star +8
  • Giant star +6
  • Variable star +5
  • Orange K-type star +3
  • A named variable star +3
  • Barely variable (under 0.05 mag) +2
Total score 35

15 more points to reach Epic.

Badges

  • Variable star · +5
  • Naked-eye visible · +8
  • Orange K-type star · +3
  • Giant star · +6
  • Deep red star · +8
  • Barely variable (under 0.05 mag) · +2
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads K5III — a K-type star. Orange K dwarfs are the marathon runners of the galaxy, burning steadily for tens of billions of years.
  • 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 5.1 you can see it with your own eyes from a dark site, over in Andromeda.
  • 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 September — that's when to go looking.

Could we get there?

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

Properties

absmag
-1.243
bv
1.587
constellation
And
dist ly
616.5519
luminosity
273.6529
mag
5.14
name
HR 152
spect
K5III
var amplitude
0.04
var designation
V428
var max
5.114
var min
5.154

About HR 152

HR 152 is a rare variable star. It lies about 616.6 light-years from Earth, sits in the constellation And, shines at apparent magnitude 5.14 and has spectral type K5III.

Its spectrum reads K5III — 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 HR 152 in the constellation And. At apparent magnitude 5.14, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, HR 152 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 HR 152 is a rare variable star

HR 152 scores 35 points on Spacedle's rarity scale, which places it in the rare tier. Another 15 points would lift it into a rarer tier.

That score comes from 7 science badges — Variable star, Naked-eye visible, Orange K-type star, Giant star, Deep red 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.