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Epic variable star 52 EP

HIP 69445

RA 213.2647° · Dec -65.4480° · star

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Score breakdown

· 4 badges
52 pts · Epic
Epic 78 pts → Anomaly
  • Wolf-Rayet star (shedding itself) +34
  • Strongly variable +10
  • Variable star +5
  • A named variable star +3
Total score 52

26 more points to reach Anomaly.

Badges

  • Variable star · +5
  • Wolf-Rayet star (shedding itself) · +34
  • Strongly variable · +10
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads WN4.5 — a Wolf-Rayet star: a stellar monster shedding its own outer layers in a ferocious wind, on its way to a supernova.
  • 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 12.1 it is far too faint for the eye: this one belongs to cameras and long exposures, over in Circinus.
  • Southern sky only. So far south it never rises for most of the northern hemisphere. To see it you'd have to travel to Chile, South Africa or Australia.
  • Best time of year. It stands highest in the middle of the night around April — 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. ≈ 11.8 million years at Voyager 1's speed (17 km/s).

Properties

absmag
5.494
constellation
Cir
dist ly
673.8761
luminosity
0.5526
mag
12.07
name
HIP 69445
spect
WN4.5
var amplitude
0.51
var designation
CF
var max
11.774
var min
12.284

About HIP 69445

HIP 69445 is an epic variable star. It lies about 673.9 light-years from Earth, sits in the constellation Cir, shines at apparent magnitude 12.07 and has spectral type WN4.5.

Its spectrum reads WN4.5 — a Wolf-Rayet star: a stellar monster shedding its own outer layers in a ferocious wind, on its way to a supernova.

How to see it

Look for HIP 69445 in the constellation Cir. At apparent magnitude 12.07, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, HIP 69445 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 69445 is an epic variable star

HIP 69445 scores 52 points on Spacedle's rarity scale, which places it in the epic tier. Another 26 points would lift it into a rarer tier.

That score comes from 4 science badges — Variable star, Wolf-Rayet star (shedding itself), 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.