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Epic variable star 54 EP

HD 25361

RA 61.2436° · Dec 58.6598° · star

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Score breakdown

· 7 badges
54 pts · Epic
Epic 78 pts → Anomaly
  • Supergiant +18
  • Strongly variable +10
  • Sun-like G-type star +8
  • Distant (over 1,000 light-years) +6
  • Variable star +5
  • Never sets (northern circumpolar) +4
  • A named variable star +3
Total score 54

24 more points to reach Anomaly.

Badges

  • Variable star · +5
  • Distant (over 1,000 light-years) · +6
  • Never sets (northern circumpolar) · +4
  • Sun-like G-type star · +8
  • Supergiant · +18
  • Strongly variable · +10
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads G0Iavar — a G-type star: the very same spectral class as our own Sun.
  • Where it is in life. It is a luminous supergiant — among the largest and rarest stars in the galaxy.
  • 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 7.7 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Camelopardalis.
  • 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 November — that's when to go looking.

Could we get there?

  • Verdict. Impossible with our current technology — and the next millennium of it.

Properties

absmag
-1.267
bv
1.141
constellation
Cam
dist ly
2064.2785
luminosity
279.7693
mag
7.74
name
HD 25361
spect
G0Iavar
var amplitude
0.74
var designation
RX
var max
7.305
var min
8.045

About HD 25361

HD 25361 is an epic variable star. It lies about 2,064.3 light-years from Earth, sits in the constellation Cam, shines at apparent magnitude 7.74 and has spectral type G0Iavar.

Its spectrum reads G0Iavar — a G-type star: the very same spectral class as our own Sun.

How to see it

Look for HD 25361 in the constellation Cam. At apparent magnitude 7.74, it is an easy target for binoculars.

Like any astronomical target, HD 25361 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 25361 is an epic variable star

HD 25361 scores 54 points on Spacedle's rarity scale, which places it in the epic tier. Another 24 points would lift it into a rarer tier.

That score comes from 7 science badges — Variable star, Distant (over 1,000 light-years), Never sets (northern circumpolar), Sun-like G-type star, Supergiant, 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.