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Rare star 43 EP

HD 137603

RA 232.4362° · Dec -58.5809° · star

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Score breakdown

· 3 badges
43 pts · Rare
Rare 50 pts → Epic
  • Wolf-Rayet star (shedding itself) +34
  • Distant (over 1,000 light-years) +6
  • Star +3
Total score 43

7 more points to reach Epic.

Badges

  • Star · +3
  • Distant (over 1,000 light-years) · +6
  • Wolf-Rayet star (shedding itself) · +34

Trivia

What it actually is

  • Spectral class. Its spectrum reads WC+... — a Wolf-Rayet star: a stellar monster shedding its own outer layers in a ferocious wind, on its way to a supernova.

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 9.7 you'll want a small backyard telescope, over in Circinus.
  • 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 May — that's when to go looking.

Could we get there?

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

Getting there

  • Aboard Voyager 1. ≈ 32.9 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 2.9 million years even at the Parker Solar Probe's 192 km/s.

Properties

absmag
0.943
bv
1.176
constellation
Cir
dist ly
1874.4596
luminosity
36.5426
mag
9.74
name
HD 137603
spect
WC+...

About HD 137603

HD 137603 is a rare star. It lies about 1,874.5 light-years from Earth, sits in the constellation Cir, shines at apparent magnitude 9.74 and has spectral type WC+....

Its spectrum reads WC+... — 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 HD 137603 in the constellation Cir. At apparent magnitude 9.74, a small backyard telescope will bring it into view.

Like any astronomical target, HD 137603 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 137603 is a rare star

HD 137603 scores 43 points on Spacedle's rarity scale, which places it in the rare tier. Another 7 points would lift it into a rarer tier.

That score comes from 3 science badges — Star, Distant (over 1,000 light-years) and Wolf-Rayet star (shedding itself) — 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.